Title of this post is steeling the title of a song from the band Chicago in the 1970's, but it applies to the engine in Miss April.
I have now gone through all the carburetor linkages from the gas pedal all the way to the drop links for each carb.  They are in sync at all speeds and the full throttle is where I want it to be.
I did find that I was having a couple of issues with one of the carb floats.  Firstly, on the tab at the hinge, it was very slightly dented from the needle float valve.  The surface needs to be perfectly smooth, as shown in the photo below after all my cleaning and conditioning of the tab.  I also noticed that it looked like the float was slightly rubbing on the carb body restricting it from moving freely.  All is good now and the float level is rock solid at idle and while holding the throttle open for a long time (both are important).

All part of the engine "Feelin' Stronger Every Day".

Top photo shows the dent/divot when I first started working on smoothing it out.  Second shot is the finished version.
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Miss April is a runner!  Took the car out today and put on about 25 miles.  Pretty good performance- not perfect, but pretty darn nice.  It was a real treat to spend some time driving the car instead of working on it. 
There is plenty more to do before it becomes a real "driver".  Next week I will drive it to a paint shop to correct a bad spot on the drivers side rocker.  Once back from paint, it will finally be time to put the door panel on the drivers side, along with threshold materials and then door seals.  Once those steps are in the books, the car will look completed.  It won't be done though, there are lots of projects to do underneath- mostly steering and suspension.
Anyway, Miss April now enters a new phase of being a running car that is being worked on.  So much fun to be this far along now!
Photos taken today are below.