First off, I don't ride a bike. I have an 08 1000 in a dirt car. Running c85, tuned, APE sprockets, and air stacks. Some background into my issue. 2 years ago, I was rebuilding the motor and found 2 burned/melted pistons. They burned right around the valve recesses. Replaced them, ran great, cool. Blew that motor (unrelated issue). Got a new motor, ran it, it's been awesome. Seasons starting in couple months, checked compression, 200 on 3, 105 on 1. Leak down test shows it leaking past piston. Awesome. Ordered new piston and rings. Here's my issue. I pulled the head off tonight, and the piston looks fine. It doesn't look like the other 2 did. Now I'm hesitant to crack this case open to change the piston. I was wondering if anyone else has run into this. I can't see the rings sticking, but I guess it's possible. Any input would be appreciated. Thanks.