I'm tired of cussing this thing. I started by checking the air filter, replacing the spark plug, then replacing the gas. Finally, I cleaned the spark arrestor. I'm getting a good yellow spark, but I can't even get it to try to turn over. I even tried some starter fluid, and it won't even pop. The only thing I can think of is maybe a clogged jet, but I thought it would at least try to start with the starter fluid. Any thoughts?