If this is a little simple - it just shows you how easily the little things can trip you up, to the point: I finally make it to Duna with Jeb and Bill, we land, gather our science (trying to get that 1000 sci for the electromagnet), and jump back into space. We meet up with the recon engine, dock (OMG - without RSC engines ... #ksppain), and head back to Kerbin. After breaking Duna gravity I start to match planes with Kerbin - my burn time grows 21, 22, 23, 24 ... totally confused. I try to circularize ... 1m 20, 1m 21, 1m 22 ... Now I'm thinking the Kraken is coming up behind me. Quicksave and exit ... restart the engine and the exact same thing happens again. Finally I zoom in on my craft and noticed that after I docked, I was still controlling the unified craft from my lander ... WHICH WAS UPSIDE DOWN I added a quick screenshot so peeps can see my mistake. The thin red lines show two craft control points (Sr decoupler and 2 man can) and which way "North/Up" is considered by the game engine - so if you try to thrust in a given direction, your burn time will go up - not down. Secondly in the diagram, the little green arrow show control point (Sr decoupler) and the big green shows engine "North/Up" ... which is where you always want to control your craft. TO THE MUN!