I believe I have a fuel problem I have spark and if I put a little gas down the cylindars it fires but wont stay running. I bought a fuel pump but bought the after market one from Mukuni. The problem now is the intake nipple from the tank on the old pump is bigger then the one on the after market one and I want to know if this is going to cause my sled to run lean and burn down?? Is that going to reduce my fuel flow that much??