Jerry,
After I adjusted the valves per you instruction, I ran the truck at idle for 30 minutes and then to it for a short test drive. It ran GREAT!! Removed the valve cover and noticed that #6 exhaust valve did not seem to be moving as well as the other valves. Checked the push rod and it was not bent. I believe you are correct, I may have #6 exhaust valve sticking? I have a Ampro upper cylinder lubricator on the truck with it adjusted at 1/4 turn and running MMO in it. will this be enough to free a sticking valve or will I need to pour the MMMO through the carburetor as you specified?
Tim
