Last night I was at my friends house an we were trying to install his new ASP pulleys an we ran into a problem. We cant get the bottom crank pulley Nut off. We tried two different air guns an a ratchet, but nothing will get the Nut off. Should we try an rent a better air gun with more power or will he have to take his truck to a shop? What should we do? That damn nut is on there really good.