Has anyone out there ever experienced thier XCR 800 bogging in deep snow? I have a 2000 I bought used and went through the whole thing with a fine toothed comb. New motor, new Exhaust valve, drive line is great and the clutches and belt are tip top as far as I can tell. The sled is completly stock. On hard pack its unreal, but if I get on the lake or some powder conditions the motor bogs and will only pull about 7000rpm, if the snow cond. are worse...3ft of snow it will bog to 6000rpm. Seems once I get back on solid ground it clears itself and goes like a raped ape. I am at my wits end with it. Any suggestions.