I doubt you would find room for extra rubber on the back, the factory had to go down from 195 to 185 as it was, to put a wider belt on. Maybe use stickier rubber though?
Is 3 failures of the compensator down to driver [mis] use rather than 3 poor compensators in a row? If you 'lug' the engine at low revs a lot, this will kill the compensator, the handbook recommends keeping the revs over 2750 and that is likely to be the reason.
