my blaster that i have is like the most hardest quads i have ever had to crank when it sets for a few hours or over night....i was told to adjust my air/fuel ratio adjustment screw to a leaner or richer ratio. but what i need to know is how do i know when it is adjusted right? is there a differnce in sound or does it just mean its easier to crank? and when should i adjust it when its killed or when its cranked at an idel? i am so confused on this