the little holes in the o ring grove in the front of the carb? right where the carb bolts onto the manifold. what are the too little holes for? would they help it idle? right now i have an o ring there but i have no idea if its supposto but there is a grove for one. the bike idles but only at a high rpm n stalls some times. could the o ring blocking the holes (i guess they are for acircuit but which one?