S
I was riding my 2013 m8000 this weekend and halfway through the day my sled got a terrible bog. It would not go above 58-6000 most of the time. At lunch I pulled my plugs and the clutch side were dirty so I replaced all 4. No change, so I just ride like that the rest of the day. Once in a while it would open up, but mostly 5800 was max. It is stock other than a can with 2700 miles. Pulled the power valves today and cleaned them, they were dirty but seemed adjusted correct. Where else would I look?