I just picked up this 346xp. Owner said it may have been straight gassed by someone he loaned the saw to. It sounded ok to me but I had never run one before. I got it home and tested the compression. 150 psi after the saw was warmed up. The spark plug was very fouled so I put a new one in and tested the saw. It cuts fine with plenty of power. But I only ran it for a few cuts. Before I sold it to someone else I figured I should pull the muffler. Of course one of the muffler bolts stripped out. But I got it off and this is what I found. The scoring is very light and goes down about 1/3 of the piston. The pic actually makes it look worse then in person. I poked around at the rubber bits and they all seem to be in good shape. I know I need to pressure test the saw. If it passes the pressure test would you run the saw as is? I don't want to sell someone a problem so I might keep it for myself. If the saw had been straight gassed will the scoring continue to get worse or will it stay the same?