and thecw, yes, I went with flat 5-18ish to all three types and multiplier -.5 to -.10 i think it was for the example I put together (the only testing was "yep, no error & component exists after research"), you were right about the typo & here is a copy/paste from shipcomponentdefs.xml of them
<ShipComponent>
<InternalName>ReactorII</InternalName>
<DisplayName>ReactorII_Name</DisplayName>
<Description>ReactorII_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>Mass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>12</Value>
</Stats>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>ShipRange</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>.05</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-10</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-13</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-18</Value>
</Stats>
<Prerequ>
<Techs>
<Option>ParticalBeam</Option>
<Option>Stinger</Option>
<Option>Railgun</Option>
</Techs>
</Prerequ>
</ShipComponent>
<ShipComponent>
<InternalName>ReactorIIs</InternalName>
<DisplayName>ReactorIIs_Name</DisplayName>
<Description>ReactorIIs_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>SensorRangeMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>-.2</Value>
</Stats>
<Stats>
<EffectType>ShipRangeMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>-.2</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-6</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-8</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-8</Value>
</Stats>
<Prerequ>
<Techs>
<Option>BasicLifeSupport</Option>
<Option>NavigationalSensors</Option>
</Techs>
</Prerequ>
</ShipComponent>
<ShipComponent>
<InternalName>ReactorIIb</InternalName>
<DisplayName>ReactorIIb_Name</DisplayName>
<Description>ReactorIIb_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-10</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>-.1</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-18</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-3</Value>
</Stats>
<Prerequ>
<Techs>
<Option>ParticalBeam</Option>
</Techs>
</Prerequ>
</ShipComponent>
<ShipComponent>
<InternalName>ReactorIIk</InternalName>
<DisplayName>ReactorIIk_Name</DisplayName>
<Description>ReactorIIk_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-10</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>-.1</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-18</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-3</Value>
</Stats>
<Prerequ>
<Techs>
<Option>Railgun</Option>
</Techs>
</Prerequ>
</ShipComponent>
<ShipComponent>
<InternalName>ReactorIIm</InternalName>
<DisplayName>ReactorIIm_Name</DisplayName>
<Description>ReactorIIm_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-10</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>-.1</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-18</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-3</Value>
</Stats>
<Prerequ>
<Techs>
<Option>Stinger</Option>
</Techs>
</Prerequ>
</ShipComponent>
<ShipComponent>
<InternalName>ReactorI</InternalName>
<DisplayName>ReactorI_Name</DisplayName>
<Description>ReactorI_Dec</Description>
<ArtDefine>Hyperdrive_01</ArtDefine>
<Category>Engines</Category>
<OnePerShip>true</OnePerShip>
<Type>Reactor</Type>
<PlacementType>Targeting</PlacementType>
<Stats>
<EffectType>Mass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>10</Value>
</Stats>
<Stats>
<EffectType>ManufacturingCost</EffectType>
<Scope>Queue</Scope>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>0</Value>
</Stats>
<Stats>
<EffectType>ShipRange</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>.05</Value>
</Stats>
<Stats>
<EffectType>BeamMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-5</Value>
</Stats>
<Stats>
<EffectType>KineticMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-12</Value>
</Stats>
<Stats>
<EffectType>MissileMass</EffectType>
<Target>
<TargetType>Ship</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>-10</Value>
</Stats>
<Prerequ>
<Techs>
<Option>WeaponsSystemsTech</Option>
</Techs>
</Prerequ>
</ShipComponent>