I checked the spark arrestor screen and it was clean. emptied the fuel, checked the fuel filter, refilled with fresh fuel. Cleaned the carb with carb and choke cleaner. Pulled the spark plug, did a compression test, 120 psi. Seemed a little high but I don't know what the proper range should be. Put every thing back together and the problem is still there.. I'm not sure but its possible the fuel line is leaking just under the carb. I saw a little moisture but not sure if it was leftover carb cleaner or gas. They both taste the same to me. I'm going to try a new fuel line this weekend after going to the Grizzly show. If that doesn't work, I think I'll take it to my one armed chainsaw mechanic.