my friend has a 07 dragon, around 80 or 90 mph the belt slips bad. it did this brand new when it was stock and now has a slp pipe, silencer and 66 gram weights and a blk/red spring i think. also belt deflection is properly adj. are the 175 dollar belts junk can u run 3211080 belt for a pro x they seem softer, or what is the deal. any help would be great..