I have a OHV165 that I obtained that was running very badly would only start on choke. I have replace the carb, and it would start, but only run with no power. I have adjusted the valves..no help. Replaced plug, filter/lines, clean gas...no help. I checked the flywheel key...it's good. I set the coil gap. It starts now with fluid, but dies right away. Any other ideas to get this thing going?