I just made an account as I'm getting quite frustrated with this... I have tested it in 0.23 and so far I haven't even been able to reach 20km AP. It seems to just lack in power, the highest surface speed I reached was about 150m/s AND it spins and moves about uncontrollably to the point where in some occasions the whole rocket just turned 180 degrees and nose dived into the rocky surface of Kerbal. Secondly, I tried it in a 0.22 but this time, and EVERY time, as soon as I put it on the launchpad, the entire craft explodes in an instant with no input from myself. Any ideas? Nick