its been sunk, they ruined the top end, parted it out I bet !? instead of spending the cash to fix it right. check the connecting rod at the top and bottom for any play ?, if the wrist pin hole is not tight ?, then it's a parts bike for sure unless you want to spend a good penny splitting the cases ( which you would need to do anyway if you decide to fix it ? ) to replace the crank or crank rod ?. all boils down to HOW MUCH MONEY AND TIME YOU WANT TO PUT INTO IT ???????. if your not going to fix it right ?, THEN DON'T FIX IT AT ALL !. part it out. this is solid advice coming from a 20-plus atv mechanic, balls in your court bro