Save your effort.
The issue has nothing to do with the belt drive itself, its been proven in higher HP applications for longer. Like most things, its the operator and maintenance. The belt will stretch like a chain does, and needs adjustment, like a chain does. Adjust properly and no issues apparently. let your chain stretch and bounce around and it will eventually blow your chaincase apart too. Peeps just gotta hate because they lost the weight war.
There have probably been as many failures of the Doo flex skid as there have been of the Poo drive belt, but the flex skid is great, no more fine tuning required there....
If Doo had come out with the belt drive first it would have been God's gift to the snowmobile world even if every 2nd one had failed, Maxwell calls that "innovation". LOL
I didnt think there was any way of adjusting the belt tension on the polaris belt drive? That would be one of the refinements the polaris belt drive needs. That and splined shafts that you could actually take the gears off(in stead of glued on garbage) and change the gear ratios if desired.