i have an 06 blaster that i have to remove the air box n spray carb spray for it to start. when it starts it runs good, but i have to continuously give it gas for it to stay on. i put n a new spark plug, k&n airfilter. i know it has something to do with the carb...does it need to be rebuilt, rejetted, or what? also the stock oil pump has been removed..n it has a fmf pipe. ..anyone know what i can do thx.I:I