I had problem finding the mixture screws and the idle jet screws. I needed to SEE them. My solution was to swap the carburetors so that the adjustment screws faced toward the center of the engine. The intake manifolds had to be replaced with Space Saver manifolds. This moves the linkage to the rear of the carbs. There was some machine work involved.
Now everything is easily accessible and you can see what you are doing.(This won't work with stock fan covers). Needless to say after making this change and finally getting the carbs balanced and adjusted I haven't needed to mess with them in years.
You will surely want to install the JayCee jet holders and jet doctors.
The easy adjust mixture screw looks like a simple bit of modification to the stock screws. Lots of good suggestions here. Send me the screws I'll make and fit the knobs.