Was out riding last Friday and my buddies 2011 Pro 800 had some issues. First, about halfway through the day the reverse quit working. Then he had to tow someone elses sled about 5 miles back to the trailer. It was all on the trail and mainly flat. He said the temp got up to aout 165 at the most. We were using a "tow buddy" so there was vey little resistance from the pulled sled. Once we dropped off the busted sled, his started running bad. Big hesitation off the start, then surged on and off. Basically not ridable. I'm wondering if the two are related somehow. He's not very mechanical, and I thought i'd try to help him out. Any suggestions?