Need help figuring out a lack of power issue on a 1994 Skandic II 377R. It has no jam off the line and tops out at about 40 km/h. The machine was parked for about 2 years, so I removed the gas tank and clean out all old fuel. I then clean out the fuel lines and pump and then took the carbs apart. There was a float, one of two, stuck in each carb. So I freed the stuck float. Power did improve somewhat, but I believe there should be way more. It can hardly get moving in powder!! Still has stock main jet and needle. Riding at low altitude, not in the mountains. Any help would be great.