I own a 00 yz426. i love the bike, but last fall i blew it up. I was cranking around in a field, and all of the sudden it acted like it had no power, So i left off the gas, and it wanted to stall, i thought it was running out of gas but it didnt. It will start back up even now, but will not stay running and there is alot of scraping. I have not torn in to it yet, i just wanted to see if anyone has had this problem, and what it sounds like, i think its a ring i just wanted to see if it could be more then that. It doesnt have to much compression. I am also thinkin of putting a high compression piston and rings in, i wanted to hear what everyone had so say about that. Please help me thanks!!