I did a compression test and its right at 180psi. Looked into the exhaust port and everything looks great. I don't think I will be pulling anything apart yet. From all the response and the video's I am not going to worry about it. One thing that does worry me somewhat, but after two years of running AV gas I am a little worried about things. I have heard everything from (never run avgas, especially in a two stroke, the motor won't last long) to (don't worry about it, it'll be fine). I realize it has lead, but so does C12... When I looked into the cylinder it was very clean, no piston wash on the top of the piston. I did have the piston top coated by max power and the combustion chamber (actually they did the entire head) It's very clean, the piston is real nice on the exhaust side when you roll it over too. This is a Wiseco piston with a window in it. I run the BR8EG and the timing plate is fully advanced, I also use the thinnest Kawi head gasket available. 40:1 Amsoil Dominator with 100 octane LowLead AVGAS for the last two years. I ride at 1500 ft to 5000ft and weather from 0 degrees C to +30 degrees C. I have never jetted for the elevation and weather, pretty much stock jetting, ya, it doesn't run perfect in all conditions but man, what a great bike. I have a buddy with a new 200cc KTM XCW and he basically jets daily... Just thought I would share that with you guys...