I bought an old sled with low miles (200) that sat for years. It was not a big investment and I was testing the waters to see if I wanted to get in to sledding. I siphoned out the old gas as best I could changed plugs and oils and went sledding. The third ride of the season the engine just cut out. My local shop (HK Hookset NH) did the diagnosis. One cylinder has low compression likely overheated piston. They blamed the old gas and dirty/clogged carbs. They suggested a completed tear down which would cost over $1,500. The mechanic mentioned I might get by with new piston and boring out the cylinder but they were not allowed to do that at the dealer. Anyone have experience with the second option. I'm wondering what a ball park figure might be for labor and parts.