I have a 2002 honda foreman rubicon 500 that I bought yesterday. It runs fine. But earlier today i had it on a incline facing down and I turned it off and then is started rolling down the hill(going forwards) and making a whining sounds so i put it in neutral and let it coast down the hill and then i let it sat there while i was doing somthing. I turned it on and put it in gear and it wouldn’t move in any of the gears and it was making a loud whining noise on the left side of the quad (while your sitting on it). Any ideas what would the problem be?