Did my first interplanetary mission, to Duna. May have slightly messed up my aerobraking and ended up going straight to Duna, with my interplanetary stage and all. Second I discovered I had not disabled crossfeed from my lander så that is completely out of fuel. So not only do I have to send a new interplanetart stage, I have to send a completely new lander AND land it somewhat in the vicinity of Jeb.