Hello all, I got a litlle problem with my current moon lander rockets, I use Vanila 14.1 + nova-punch only atm Meet Lunas-II, at a launch platform during night (Launch not lunch ) Yeah, it look\'s crazy, a 2meter central stage with 2 3 meter \'booster\' stages.(I tried a detaching mechanism but the main is to heavy and there isn\'t enough room above the 3 meter ones to support any other modules to make it look cleaner. The 3 meter ones run out at around 30-40 km but the rocket has enough momentum to keep going up on a large bertha engine, when the central stage runs out the apoapsis is at 700 km above Kerbal. The biggest problem is that even with sas on it has a tendency to drift off course, the use of rcs during liftoff keeps it steady, but the rcs fuel used seem to come from the external main stage rcs tanks then from the 2 meter rcs on the main,when the externals are depleted it does go to the main. Together with throwing off the main stage the second stage ignites (doing it separate causes the upper stage to collide with the main), at full trust the apoapsis is soon at the Mun\'s orbit. Slow down and save fuel. Then its fast forward to we get there and wait for the moon to catch us. Then use the remaining fuel to get on a trajectory to the moon. Throw of the main stage and onto the lander. The lander consists of a command module, advanced sas, 4 landing struts (retracted) and a small but powerful engine. Lunas-I had no sas supporting it and chrashed into the moon tumbling. I get to the moon 10 km - 5 km I start thrutheling up to decelarate lower the landing struts,1km speed down to 100 m/s, 500 meters speed down to 50 m/s,75 meters speed down to around 25-30 m/s. Getting close,at 10 meters I\'m slow enough to go for landing I turn off the engine. Landing achieved and at the exact moment I set down the engine goes back on full thruthle on its own despite it showing full stop, sas was still on. A few moments later the lander breaks up and the command module comes crashing down to Mun. The idea was to land, and atm I the design does not include a return to Kerbal option,so any pointers or tips.