ORIGINAL: j_t_j2006

i have a problem with my piston. i have a brand new 45 i was breaking in the engine on the bench when it flew off the bench and hit the ground breaking my new prop and doing something to the engine. i picked it up and checked it out. i noticed that it was turning over but very hard. i disassembled it and noticed that the cylinder was loose in the housing. and i also noticed that the piston would get stuck about 3/4 of the way up the sleeve. i was hoping that someone could tell how it coming off the bench could make this kind of problem