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- Oct 21, 2016
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View attachment 140177 View attachment 140178View attachment 140179 So i think the 2159 cylinder is toast. The arrow is the only groove and it stops at the bottom of the exhaust port. But u can hit it with ur nail for sure. I believe the piston that bonded to the cylinder wall is what u guys refer to as transfer? Or its just shot this is a pro call.