I replaced an Arctic OEM belt today and it is about a 1/4" above the outer diameter of the secondary. With the rear of the sled (2010 F8 SP) the track spins at idle and sqeals when on the ground. I put the old belt back on and it fit fine, then reinstalled the new belt and it again reode to high.
Can there be this much lenght difference from belt to belt? I purchased the sled new 2 years ago and have replaced the belt several times over the years and never came across this issue before.