My buddy got a 50 Kazuma quad for his kid for christmas....I looked at this thing today and I'm astounded by the pipe on it, regular sized can muffler, but the outlet is a 1/4in outlet tube about 1-2 inches in length, very similar to the metal fuel line on a carb. This seems pretty restrictive to me and we are thinking of cuttin out the 1/4inch tube and boring the muffler out to take a 1/2in or 5/8th's tube or perhaps bigger.......any concerns or words of encouragement from anyone ?