Thanks all - I think the problem actually ended up being the Yellow Propulsion lines going from the tanks to the fusealage... i noticed in the one that i have in space that a light cut off the line. I actually thought the fuel line was going to be decorative as everything on the station is cross-feed capable. Anyways, I put a second one into a higher orbit (240K+ so that I could time warp faster), docked, and it is all refueling nicely. I was inspired by this youtube video http://youtu.be/zri-Wep7Fv0 and am pretty happy with the appearance, definintely not efficient (nor was the 48 rockets I used to get it into orbit) Kerbal Logic --- just add more rockets Love the game, been playing it for a few days now, landed on the Mun, sent up a rover, and now docked with a refueling station... I'm really excited about the possibilities!! JJ