i just bought a v2 supercharger kit and the belt that came with it was a gatorback part# 4060705 6PK1790 and for some reason it doesnt fit.. i have the 3.125 pulley and it seems to be the size listed for it..but i cut the belt and measured it and it seems to be 3 1/2 inches short.. please help me asap.. ned to get my car running soon. thx in advance. also i made sure that the tensioner was loosed all the way so its a really off belt size..