I tore apart my 96 XR200R to se what all the smoke was about and found a distinct lack of maintenance by the previous two owners. There are 7k miles on it and never once was the centrifugal oil filter cleaned. The oil pump is scored and the piston rings are shot. Cam chain guide is trashed too. P.O replaced the cam chain just before I got it and it ran okay for about 100 miles. I am going to put a 66 MM Wiseco piston in it and need to know what the recommended piston to cylinder clearance should be. The service limit is .10mm or .004" I'll figure .002" should be about right but I don't want to go too tight and risk an early seizure. Anybody want to chime in?