ive asked a few questions about this but i have yet to figure it out and it seems to be getting worse and not really rideable. I have/think i have, rich symptoms but im not sure ill try to explain them and hopefully someone can give me some insite on it because we just got over 2ft. of snow and i want to ride...bad. alright when i start it it will idle high then come down to normal then if it sits for like more than 5 minutes idling itll drop down to like 500rpm and sound like its going to die. then when i get on and ride it around it sounds really loaded up and has no power it wont go over 65 mph. also itll when i get into deeper snow it fouls plugs and blows black smoke which it didnt ever really do before on packed trails. it sounds like it has a major miss in the motor even with brand new plugs. thanks in advance for ideas/input.