The cylinder is fine, and I have a piston, so n need for a new kit.
I just wasnt sure if an air leak could cause enough detonation to a hole in it. Glad to hear it can, cause I dont want to time my cdi again.
All the pistons I have seen with holes n them that were caused by timing had huge holes all th e way through.
Gonna order a new set of reeds soon and port the hell out of the cylinder and she will be back on the road.