I am currently experiencing some carb problems with my 2000 grizzly. I have had a problem with it flooding and actually filling the airbox with gas. I think that I have it narrowed down to a float sticking or float height adjustment problem. Since I have my overflow drain snorkeled up higher than my gas tank, it takes the path of least resistance and fills my airbox. One problem that I can't figure out is my air intake "blowing" air. At idle it is sucking air, but right off of idle during acceleration my intake actually blows air for a second, then starts to suck air again. I have tuned my bike several different ways and no matter what I do this occurs.................any ideas? Could this be normal? I'm at a loss.