After blowing numerous belts last year i tore the clutches apart and hear is what i found. First thing bushings in secondary were worn out of round replaced those. Started this year with the new bushings and still had too much belt heat. Rechecked offset and machined to 13 specs still to hot. Purchased new 082 belt and Carlisle 822 now tested those. Found out i could not shim to get the deflection i prefer on the 822 it was on the loose side but the belt heat was waaay less could wrap hand around belt and it would not burn. Now i did have to adlust my clutch set up a bit but it kinda proves that it appears these belts from AC seem to be on the short side. For the record during testing i was in approx three feet fresh sidehilling,tree hillclimbing,boondocking and point and shoot climbs. If anyone else is experimenting please lets keep this going as the answers will become evident.