jug

How many different pistons are there for 66/80cc sky hawk engines? I purchaced a cylinder & piston when I put it on my motor the piston hits the head, I see that the connecting rod hole is further down tward the botom of the piston then the one that came originally, causing the piston to travel...

Hopefully the title will keep the riff raff out of this, but I doubt it. To start, for the record : I am aware that oil containers are in HDPE 2 plastic. This is what milk jugs/laundry detergent containers/plastic gas cans are using. Milk jugs are too thin and most people only have experience...