I recently have been having a problem with my 2010 Sportsman 850 XP. It only while in gear (haven't tried reverse). When running in Low or High, my machines dies almost any time I go from ~5000 RPM to an idle (i.e. going down a straight away and then letting off to take a turn). Probably at least 50% of the time, the machines dies completely and I have to restart it. Sometimes, it idles really low, but then catches up. This seems to happen when the idle drops to about 1400 RPM. Once it has started chugging, I can't feather the throttle. It feels very similar to the reverse limiter. It started happening Friday. I have recently installed new tires and springs. I also installed K&N air filter, but have since swapped back to troubleshoot. The machine was running great Friday, until I got stuck in the mud, really stuck. We worked the 3500# winch pretty hard. While winching, my battery light came on briefly. Saturday, I hooked up a charger and the battery was low. I charged it and rode again Sunday. Same issue. I did not have a chance to check the battery again. Any suggestions? Thanks for any help you can give.