Yesterday my bike ran better than ever. I was super impressed by its responsiveness, power, and most of all, the fact that if I opened up the throttle it didn't four stroke. I didn't do anything to make it run that way but I did notice it was idling higher than normal. I checked for air leaks, none that I could find. Then later on in the evening the idle wasn't higher than usual and it would again four stroke if I gave it too much gas. I am leaning to believe that it was the weather. I live at about 4500 feet. There was a system moving in that produced some heavy winds... I wonder if because of the air pressure difference my bike had a better air fuel mix.