Yes, this is my first time, and it's a little trickier than I thought - I set the idle at around 1500, but then couldn't get them all in line - I would adjust one, and doing so would cause another channel to rise, or lower.
I adjust #1, and #2 and #4 don't show anything. I get #'s 1 and 2 equal, and 3 and 4 are flat. Adjust those, and #1 and 2 go down, or Waaay up, and 3 and 4 barely show anything...tighten 3 and 4, and 1 and 2 collapse - or 1 and 3 go up, and 2 and 4 go down - - I'm all over the place !
Adjust one, the idle picks Waay up; screw that one back down, all four drop out...it's like playing carburetor Whack-A-Mole! I did wind up taking the carbs back out and bench-synching them again, and tightened down the allenheads on the carb holders, just to be sure I was on a 'baseline', and I was...the carb is really sensitive.
Technical note, though - the #3 carb appeared to overflow, Just Once - a big puddle of gas came out of the #3 overflow tube - I assume because I probably inadvertently closed the slide and it backed up - but what do you think?