Hoping to get some help on diagnosing a problem. Had to leave my sled in a difficult area and I am hoping to go back and fix it rather than tow it out. Sled started out the day running great as it usually does. Shortly after it started bogging badly but more like a cylinder was cutting out not like it was getting loaded up due to jetting. Occasionally while feather the throttle to get it go it would kick in for a few seconds and run like nothing was wrong. Often times when getting read to start from a stop i'd have to step off to get it moving so the problem was worse with a load on it. I'm really getting the feeling it's and electrical issue. The headlight has been unusually dim for a while and recently it brightened back up like it should be and then the day before it crapped out the light was flickering from dim to bright. The machine had persistent stator problems in the past but not for a while. Also during the ride, but noticed after the problems started, the exhaust developed a large leak, could improper back pressure cause the symptoms as well? Plugs were not great but they were not fouled out either. I changed to a new set and it ran good for about 10 seconds and the problem continued. Thanks for any help.