So I have a 2010 mud pro 700 and I have just put on 1000k other then the rubber it is still stock. Last summer was my 2nd summer with it. it over heated a few times and started running ruff. When ever I would rev it up for a bit then let go of the gass it would rev down then stall.which ment it would stall in the mudd all the time if I let off the gass. it would take for ever for it to run half smooth when I first started it up to. I took it in to a dealer to get checked out wich i still have a few months warrenty on it. They told me the valves needed ajusting and that I should be doing it every 500km. This does not seam right to me.