Use a walbro felt clunk and a 3 line fuel system. be sure to use a gasoline stopper and fuel line as well. do not over tighten the carb/reed block as well. this can warp the reed block as well as induce an air leak. finger tight and a 1/4 turn. I use thread lock as well. You may also want to do the reed block mod and be sure to use only a 4.8 volt battery. My dle will even have a miss on a fresh 4.8 battery. with a 6 volt it will damage the ign.