If the wrist pin catches a port, it stands to reason the rod will break because of the somewhat jam that would occur when the pin get snagged. Ive actually had one engine when pushing the piston head all the way down, there were two grooves created by the wrist pin on the inside of the cylinder wall. On the second engine I dont know why it broke, couldnt see any marks on the cylinder wall, mabey it got caught under the sleeve. So far, Ive been doing ok with the latest engine I ran about four more tanks through it again today, so, that puts me at about fifteen and a half tanks. If it aint broken in yet , Its never going to get broken in. Been flying really good. so far no problems. Getting my big grin back
