I have a 2011 deluxe just picked up an 18" rear went to put it on everything started fine untill I went went to put the belt on the new pulley. The belt is to big and won't fit on the pulley. I measured the old one and it's about 1.25" the new one about 7/8" and the belt is 1". Do I need a new belt? Or is it possible they sent me the wrong pulley? So much for riding this weekend