I have a 1998 Yamaha Grizzly 600 4x4, it is not transfering but about 50% of the power to the wheels in 2 or 4 wheel drive. I have pulled the cover and the belt is 1 1/4 inches wide and looks good. it also meets the width from factory specs. So I am left scratching my head with this one. I was sure it would be the drive belt.

Can anyone help with this?