I used my borescope on this kdx 200 to see how well it worked and the piston is clean except for a quarter size spot of carbon dead in the middle.how many hours you think this bike has?I did two compression tests one dry no oil to the cylinder and then one with a squirt of oil in the cylinder and the compression went from 165 to 190psi.I've got about 10 hrs or so on the blaster so I'm curious how that piston looks?anyhoo how many hours with a clean shiny piston in the bore do you guys think is on the rebuild?
