This winter while rebuilding the top-end on my 2000 WR I noticed that the new replacement piston pin had a dull finish on the O.D. instead of the polished almost mirror smooth finish of the one that came with the bike. I was not that concerned about it until I was talking with a machinist (who works primarily on car engines)about turning down some swingarm bushings and his concern for getting a polished finish to keep the bushing from tearing up the bearings. Of course I did not think of the piston pin while talking with him so I did not get a chance to discuss this specific application with him. Has anyone replaced their piston pin and noticed this dull finish? Or did Yamaha sell me a defective unpolished part that could cause trouble down the road?