I Seafoamed the heck out of the old carb to no avail. The new Chinese carb has it running well. I think I have the cold start thing figured out. First, I replaced the Chinese choke with the factory choke. The Chinese one did not have an O ring on it. That didn’t seem to make much difference in cold starts.
Second, I had to remove the tamper proof plug to expose then pilot screw for proper air/fuel adjustment. That helped.
Finally, I repaired some wiring to restore the carb heater circuit. It seems to start easier and warm up quicker. Pretty much back to running like it should.
