du you guys have to have your cylinders nikasil treated at 100 hours? im starting to wonder if this is a suzuki thing, or an owner thing. at my latest rebuild, at 100 hours, i had to change piston, crank, and have the cylinder replated. now, 30 hours later i took the head of, and can see scrathes in the cylinder wall again.? is this normal for these rmz´s? i change the oil at 6 hours, (motul 300v), and airfilter is always clean. this wasnt a problem on the honda crf´s i used to race a few years ago.