I noticed at the last race that in the rough stuff that the motor had an intermittant bough. The cause for the bough was the primary bowl vent was over flowing. I have already lowered the fuel pressure (3 psi), lower the float, etc. My question is......is there any reason why I cannot use a 5/16" diameter piece of fuel hose and extend the vent tube up about 2". I think that would fix the problem. Any input?