Weber, Carb Balance Options

[NARP74]

I was starting to balance my carbs, never looked into them since I bought the car. I ran into some issues with my carbs vs the standard docs I find.
One bank reads 4.5 and 5, the other bank reads 6 and 6 with the snail. When I looked into adjusting the lower reading one, I noticed some odd looking adjustment options.
I was expecting to see an air bypass, idle mixture and vacuum port on both sides. I only have it on one side. Pic below.
The side missing the air bypass happens to be the lowest reading of all 4 carbs, so how do I adjust that one?
Carbs are numbered, 40 IDF 42/43 4C on the base of both.

[Superhawk996]

Make sure the idle air bypass screw on the 5 bore is fully closed.

Bring 4.5 / 5 bank up to 6 ish using the adjust screw on the side that affects both throttle bores. Readjust idle mixture as needed.

Alternatively you can bring the bank with 6’s down.

Which way you go depends on where each set of throttle plates are at. You need to ensure the transition ports don’t get uncovered at idle. Example, if bringing 4.5 / 5 back up to 6 is uncovering the transition port, then you must bring the bank of 6’s down.

[930cabman]

Make sure the idle air bypass screw on the 5 bore is fully closed.

Bring 4.5 / 5 bank up to 6 ish using the adjust screw on the side that affects both throttle bores. Readjust idle mixture as needed.

Alternatively you can bring the bank with 6’s down.

Which way you go depends on where each set of throttle plates are at. You need to ensure the transition ports don’t get uncovered at idle. Example, if bringing 4.5 / 5 back up to 6 is uncovering the transition port, then you must bring the bank of 6’s down.

If I recall correctly ( (IMG:style_emoticons/default/blink.gif) ) the Weber folks recommend to bring the high flowing carb down.

And yes, they can be finicky