I've tried 3 carburetors' two authentic 1 aftermarket,3 carburetor flanges same thing 2 authentic 1 was a metal farmer tech, 4 intake boots 3 authentic, 1 being for colder conditions and 1 was new West from wolf Creek, 2 air filter holders 1 standard 1 heavy duty, 2 sets of crank seals 1 Hyway 1...