Alright, I did a rebuild, new bearings, seal, gaskets. New spark plug too. Still won't start (using drill on the stand). Tested spark and compression again, and plug smells like gas. Flywheel doesn't turn super easily, is that normal? I can turn it by hand but drill doesn't sound like it is getting up to max rpm. When turning flywheel by hand it feels like it goes past a slightly tougher spot once every revolution. Could plug be sparking against the cylinder but not once I put it back in?