Thanks M,
I just went over Pat's article and from what I can see I've all ready been there.
The spacers between the manifold and the carbs have been installed and are about 3/4" thick , hard black shiny plastic.
The gradual increase in the drill size was done with the entire restriction being completely removed from both carbs. The drill bit was drilling the entire shaft when I stopped enlarging the hole. (No change in hesitation off idle)
Every issue identified in the article has been done, both carb's components match identically.
I keep coming back to low vacuum but I don't understand how. I do not have vacuum leaks (used carb cleaner at every connection) {I did not disconnect the vacuum line to the wipers but I will tonight when I drive the truck) and the compression on all six cylinders averages 115 pounds with no more than 10 pounds variance between any two cylinders.
I've got plenty of power piston springs, the next step for me is to cut 3 coils off to start and then one coil at a time until something changes when moving from off idle.
I appreciate all the help guys, any and all further comments / suggestions will be greatly appreciated.
Does anyone out there have the ability to contact Pat Smith, perhaps talking with him about my setup might help. If Pat could call 801-657-8442 I would happily call him right back.
Thanks again and have a great 4th of July Holiday
Ted