[Killer Bee]

agree with above, I would call local dealer with vin, eng, make, model, etc. and they should get to the bottom of it for you.. I would also ditch that unknown aftermarket junk and go back with proper factory a/c or non-a/c serpentine set up..

while a non-a/c engine may have an idler where the compressor would be to keep belt route typical, the idler may not be the same diameter as the compressor pulley so two belt lengths may be available..

good luck!