Hey, What's up? I just bought a 2008 AC Prowler, and I took it for a ride to check it out. I went to Climb a relatively easy sand dune, and was locked in 4 wheel when I started up the hill, it stopped and I got a hell of a BRRRRR! I thought that maybe I was in between gears so I backed up and tried again, and again I got one hellofa BRRRR! so I gave up and drove home over some small hilly stuff without the grinding! Is it possibly due to a worn out belt.....or.....? I'm familiar with Polaris, but NOT arctic cats!