I've got a 2014 John Deere Gator XUV 825i that's been acting a little sluggish lately on takeoff and going uphill, I took the clutch cover off and ran it up on jack stands to have a look and turns out the belt is only climbing about halfway up the secondary clutch, the belt is not that old and still looks to be in good shape. Although the primary clutch seems to be doing its thing, but the secondary doesn't look like it's fully squeezing the belt like it should