Well, I didn't get to spend the time I wanted to on the truck this weekend, too many chores. I did however move the truck into its new "temporary" winter storage barn. It started right up with the choke pulled like normal. When it was warm I moved it around and prepared to back it into the barn. It sputtered and acted like the choke was stuck, it appears to operate fine. Because it is an updraft, fuel was running out the bottom of the carb. I was suspecting the vacuum advance as previously suggested, but could it cause this. Even after it was in the barn and shut off, gas still ran out for a minute or so.