I know this is for tractors but not sure where to post. A fellow has a Cub Cadet tracked self propelled snow blower for sale. I think it said 286t. It starts and runs but barely. The owner thought the gas was old and clogged the carb. Wants $100. Anyone have any ideas, comments, thoughts on the CC tracked snow blower and good/bad about the same. Ways to clean up the carb short of a rebuild? Thanks