Not saying this is your problem, however:

If it were mine I would replace the thermostat. I have had more than one thermostat stick; and then decide to work, and then at the worst possible time, stick again.

Jon


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop