Thanks guys. I priced a replacement cyllinder at Bike Bandit ($497) and at Ron Ayers ($410). Only problem is that Ronayers.com doesn't accept International Credit Cards. So lame. Great prices, but needs to think outta da box (American Borders). I even offered to wire transfer the money, but they don't do that either (not customer oriented I'd say). I think I'm going to put in new rings, clean up the Kips and sell my 220. I have a 2003 Yamaha WR250 lined up thats in great shape. I will keep my 93 KDX200 though.
StuckinJersey... just remember, you will have to rejet your carb due to the additional velocity of the gas-air mix demanded by your bigger bore. Pilot will have to go up, main to go down...I think. If you don't have a Fatty Pipe, you may have to consider getting one of those too. Good luck.