First time I landed on the Mun ... which was yesterday, so also the only time ... I realised my lander legs were pointing the right way - but didn't clear the engine. The probe actually ended up landing on the engine directly, wobbled, two lander legs touched the surface and then the lander gently rebounded and settled entirely on the engine exhaust, no probe legs touching the ground. Just about to try a probe landing on Minmus, hoping I got the legs sorted