Hey, First thanks for replying, I tried to ramp the speed up first 50 then 100, but the tritium doesn't generate, as before even when I click the button on the UI it just stays the same on the fussion reactor, on the fission reactor it clicks over to breed tritium when inactive but when activated it switches back and will not work. I will try and re-install interstellar and try again I hope I can get this to work. As you can see below, it took four launches to put this together even with MechJeb docking was a pain. There are docking ports at the red and tanks at the blue indicators. I'm running MechJeb, Alchemy Technologies, Interstellar, B9, KWRocketry, Kethane, EnhancedNavBall, I think that is it. Right now it is not too big a deal, but later if I want to put a station over Jool for refueling it may be irritating. Also I forgot to say how much I love this game I have almost 400 hours on steam playing, and mods like this one really make it so much more fun and interesting. Thanks for your help. P.S. Yes, I need to figure out how to do images...