I recently replaced the tank vent tube on my SD114. The saw has always died if you let it idle for more than a few seconds. The tank vent line just rotted off and has prob been causing problems for a while. I set the H side screw to 1 turn out and L side screw to 1 1/2 turns out and then set the idle after that. Didn't know if I need to adjust it differently or not . Those are the factory settings from what I've seen.