Hi all, A friend of mine just bought a 03 gas gas txt pro, the engine was knocking so we pulled the cylinder, there was quite a bit of damage to the piston, cylinder is ok.Bit of play on the little end bearing and pin but bottom end is ok. The other problem is the crank is very tight, to the point that we cannot spin it by hand and have to use the kickstart and its noisy when you spin it, not grinding but a rubbing noise. Any suggestions? We pulled the ignition cover and there is no play in the crank,bit of normal end float but nothing up and down.