Ive heard there's something-- I think it was called "sea foam" or "ocean foam" to help clean my carburetor for my stihl 028av chainsaw. Does anyone know if this works and if so where I could go to buy some? Do I just add it to the gas mix? Any other ideas to clean the carb?

Auto parts stores sell it. I prefer BG44k, but Seafoam is 1/3 the price even if you have to use more... I always put some in the gas can used for lawn equipment... helps clean it out and keep it clear of varnish buildup.