2014 XTZ 1000, new in 2017 with less than 300 total miles. Was out hauling some carboard boxes, and went around my house in some deep snow. Had it in low range and diff lock. Worked it a little getting through the snow for about 10 minutes, then back to hauling in 4wd, high range, no lock. Started to hear a nasty grinding, rubbing noise from the engine area. I shut it off. Started back up and tried to get to garage, each time I put it in gear, forward or reverse would die out. Towed to garage and took clutch cover off, clutches all looked great. Started it up, noise was there at idle, but went away when I revved up the motor. Put in gear, and tried to give it gas to move, loud clunk and died. Same in reverse. Noise sounds like from back of motor behind secondary clutch. Jacked up rear wheels, turned by hand fine. Put back in gear with jacked up, revved up motor and wheels turned just fine in both forward and reverse! So, nasty noise at idle, goes away revved up a bit in neutral, clunks and dies with wheels on the ground when I put in gear and try to move, but wheels turn fine in gear jacked up. What can the problem be?