Hey all, first things first, I've been using this guy's guide, and its been ACE so far (found in Tutorials: http://forum.kerbalspaceprogram.com/threads/62814-Tutorial-Beginner-Science), and I asked my question in that thread too a few days back. I'm having a problem with the posted mission 4 setup: I have everything recommended, but my rocket will just not gain altitude beyond 54km. Even before the second rocket has run out of fuel, I have started to descend, and this is while it's still boosting. As an experiment, I de-coupled my capsule from the second stage whilst it was firing, and it plummeted beneath my capsule like a stone. Didn't have the problem with the mission 2 and 3 setup though, that was almost perfect to what it was said it'd be, it was great. The mission 3 setup runs out when it says it does, and I continue via momentum up to 110km, textbook. If anyone has any ideas that'd be ace? I didn't want to just start strapping more rockets on before I knew what it could be Thanks in advance! EDIT: Answered!