STOP right there. That should have been the first reply.
It was in the first reply
Thanks for noticing. To The OP Congrats on figuring out the issue. BTW, there are plenty of clutch configurations for Sanden compressors, including single belt drives. There is no functional issues with the unused groove, they don't require as much power to run as the old Chrysler v twin monstrosity- and getting a matched set of belts is a PITA.
