Still pretty cheap for a two-stroke top end. Especially at Flat Out where you can order newYamaha parts at 20% over dealer cost. I’d be screwed without those guys.

http://www.flatoutmotorcycles.com/

I’d throw a new top end on it first before going to the trouble of splitting the cases. LA Sleeve can fix your cylinder if you don’t want to buy a new one.

http://www.lasleeve.com/master.html