once clutched correctly, the M8s do not have a belt eating problem...except in those rare conditons where any sled will eat a belt
besides the obvious:
-check the mount under the reed area, tighen as needed cuz this one likes to get loose...i went the extra mile and added two bomb proof zip ties that hold this mount to the mounthead center thingy (its very close to the mount)
- i also added an addtional mount like the M1000 guys do...its custom, you cant buy one, all you do is invert the angle mount used on an M1000 extra mount
- maybe you have a small hole under the primary, this was a problem for me, drove me nuts until i found it, so nuts i parked it and bought a 2010 stocker that now collects dust
- i also stuff high temp RTV in each rubber mount as to somewhat look like the 2010 and newer engine plate mount