what or how can i move my 66cc motor to the left to allow more room for chain so i can fit the maxxis brand 2.5 tires.the rear sprocket is no trouble shimming or flipping but then chain is not perpendicular to the parallel.LOL! I have the front adapter for larger down tubes which i can redill to adjust. But the rear motor mount is alot trickier.Any help will be great so i can look kool with fat maxxis tires too. Ill probably have to buy a gas frame!SKYHAWK