All, finally had a chance today to get back to the project. Started the truck and watched the heat riser and it worked like a champ. Took about 7 to 10 minutes or so and it begin to slowly open and stayed open. I drove it around about seven or 8 miles, was still open –- parked it when it cooled it closed.
Next, I removed the carburetor, going to rebuild it. When I removed it I looked into the intake manifold there was an eighth inch + of fresh fuel lying in the manifold. I don’t profess to be an engine expert, but I’ve rebuilt carburetors on other cars and never noticed fresh fuel lying in the intake manifold. I will keep you posted. I feel like I’m finally chasing the right dog. Your thoughts?