is it the pin or is the connecting rod worn. Quick fix is new wrist pin and your riding again. But I would do a full tear down and replace your connecting rods, pistons and wrist pins. Yes it’s much more work but look how much fun it will be!Yes it was knocking prior to swap. Actually scoped the cylinder and found that the wrist pin may be the culprit. Looks like a full tear down is the next step unfortunately.