Anyone know the pounds of tension on V's, powersteering and AC belts. I'm having some difficulty cranking after turning V's to and PS to 70 pnds. AC has no tensioner, broken, but is at 50 pnds. I think I'll back off 10pnds at a time unless someone has a better method. Thanks in advance!!!! I've also read that PS an AC should be roughly half V's?