Hade some problems last winter whith gasoline to the engine. It startet after the engine was renovated and i hade some biger main jetts. Yust stoped when a have hade full gas for a short time. Checked everything, renovated the fuel pump and exchangeed the filter. nothing wrong. Must be the gasoline because sparks was dry. Wonder about how greatly the needle Valve can feed gasoline to the float chamber?? My Needle Valve is 1.5 and a have 480 main jett. A am thinking of change to lager needle Valve or put one more fuel pump...Enyone how knows??