Hi all. So having not changed this belt since I've owned it 6-7 years, and the previous owner not looking like the wrenching type I thought I'd change the belt before taking off for Elk Season (Tomorrow). The problem is that once the new belt is installed (also did the 1mm shim mod), the belt sits at least an inch low into the rear pulley so it bogs like hell. I've had it apart twice and can't see anything wrong and I know it's back together right. When I watch video's of belt changes of this machine the all sit pretty much even with the top of the rear pulley. This is a Yamaha belt and the packaging shows it's for the right machine. Any suggestions?