I have a 2006 kfx400 and about 2 weeks ago replaced the rings on it. It is a wiseco high compression piston with full fmf exhaust and I replaced the rings with the compatible ones from wisecos website. I broke it in last week and i jetted it to a 177.5 and it ran great. I had just got done doing a pull and i had held in the clutch while i was slowing down and it died and now has no compression. I tried to start it after it cooled off and it wouldn't start and so I checked the oil and it was overflowing and it was gray-ish and very thin. Im not sure what I should be looking for when i tear it back down.