I'm having a problem with my wife's sled . It's a 96 Cougar 550. The last time we took it out it ran great , absolutely no problems at all. Put it on the trailer, came home, no big deal. Sat for month and a half, went to start it yesterday nothing. I've got spark, fresh set of plugs, getting gas to the carbs. Pulled the lines to the carbs to make sure I had gas flow. Got gas thru the lines. Poured a small amount of gas in the cylinders, it fires, but burns that and quits. I'm new to this, but everything points to the carbs which I've never torn down and don't know much about. What do you guys think. Am I missing something?