and I took a quick shot of the top of the piston (shown below). For running since February I guess it's not too bad. Most of this riding season I've ran the Amsoil Interceptor, but in fairness to the Amsoil I did run a bit rich until a few months ago and I did use run about 2 gallons of premix with cheap 2-stroke oil that I bought in a pinch. So what you see is not entirely the Interceptor.
Questions: I took the pic after I had lightly scraped at the deposit to see how easy it would come off. You'll see that the buildup is not thick. But note how the pattern shows a predominance of buildup on the intake side. What does that signify? Also note the two lobes that stretch out the most pointed to either side of one of the studs to the left rear of the cylinder. What does this mean? Finally, towards the exhaust side of the piston the buildup is not an even layer; rather, it's sort of a texture-patterned deposit. Again, what is the significance of this?
Would you be worried?
). I've gotten to the point over the last month where I can actually do this stop/start, stop/start in a much more aggressive fashion, sometimes getting the front wheel off the ground 2-3 times in a row ('not bragging, just lots of practicing cause I can do it at home). I tried it a bit ago - sitting down initially - and I could already tell the difference in low end. When I tried it standing up I did so but without the same aggression typical as of late and the bike now wants to be more aggressive on its own!! There's enough more lurch that the front wheel gets light and the momentum pulls harder than before. My grips try to pull out of my hands more easily, which translates to the throttle rolling open more, which translates to more momentum, which means more throttle . . . 
