If anybody has the TMO 2.5 download, look in Ducimus' TMO_Manual.pdf in the support folder. I'll try and find that link that KaleunMarco gave me for the old thread about that... The game is weird with the upgrades, and it bears repeating...
Edit: found it!
Of refits, new commands, rank, and retirements, thanks to KaleunMarco!
btw, FotRSU uses different values than TMO does...