[dane]

"...an area closer to the primary that was beginning to wear through due to belt contact. "
What is "an area"? What is wearing through?

"...on my third belt in a two year period."
That is not normal.

 

[dane]

I think you are onto something. This system relies on both clutches working in unison even though they are actuated by totally different means. The primary moves based on RPM while the secondary moves based on torque. If they are out of sync the belt won't be properly tensioned and could slap.