Hold everything! Opened up the carbs yet again this morning. Cleaned everything around the slides and needles topside. Dropped the bowls, floats and needles underneath and gave a good cleaning also. Shot more carb cleaner and air thru the fuel intake. Float needles looked good as new but I switched sides on them just to see if it made any difference as to which bowl would end up empty. Reassembled and fired up. Started watching the clock after dechoking. 5, 10, 15 minutes passed no problem. What the heck, let her go. It's about 35 degress in the garage so I ran a full 30 minutes before I shut down. Never a sputter or hesitation. Probably too early to break into show tunes but I could be cured. I must have hit the right thing or combination of things on my latest trip through the carbs.
Thanks to all that posted suggestions. I can't tell you how much I appreciate everyone hanging in there with me on this. Although I've never had the pleasure to meet any of you in person you are considered as brothers. Hopefully someday our paths will cross and I'll have the opportunity to pick up the tab.