Supercharger belt slipping

[Christenn23]

middle of the pic. There is a clean spot where I wiped it with my finger. The supercharger has less than 1,000 miles, is this excessive amounts of dust?

 

[GriffX]

Try to look at the area around the charger pulley. If you see some rubber dust there the belt slips.

BTW, I had a Gatorback belt for my supercharger and it was worn crazy fast and started to slip. I found that if the typical whine dissapears under high load, something is wrong. So, I use a normal belt again.