I've been doing RSS recently, and I made a rocket for landing a small probe on the Mun... figure you would enjoy a picture on the launchpad. It's a mere 100 parts, but don't let that fool you... 200 meters high, 15 meters wide. It failed. The first issue is it would bang around in the clamps. The second, it spins at 100 RPM before booster sep, and when it does, it kills the main stage. Then, the second-to-final stage decoupler refused to decouple. No, it was NOT upsidedown.