lately at some gas stations, my tank will refuse to fill up. the cutoff on the gas pump cuts in a fraction of a second after i squeeze the handle. the only way i can fill up sometimes is to hold the pump handle at half throttle and slowly fill. one time, a little gas dripped out onto the back side of my back tire while filling. i couldn't see where it was leaking from. is it possible that i have some sort of blockage in the fuel tank filler pipe? actually what i want to hear is that this is a common problem and that i don't have to take it in to the dealers...