Anyone know where we could get 31 gram 28x22 rollers for the X500? Mine is a carbed 2007 where the stock weight is 30 grams. The fuel injected X500's are 33 gram's, I think this would be to heavy for the carbed models? Dr Pulley had 31 gram sliding rollers but pulled them from the market, (because, I think, to many people were having issues/shreaded belts) with them installed, including ME! Also, anyone found another source for stock size/weight rollers other than from Kymco? Their prices on rollers have gone through the roof!