I second giving build reactors to JT. If you look at the build skills, every race has at least 2 classes that can build to their racial strength except Jenquai. Engines = all 3 terrans, Shields = PT & PS, Reactors = JE only. Plus, as it stands, there is no building reason to pick a JT over a TT. TT can build everything that a JT can. At least with the PT they can build reactors.