1965 CB77 original and stock. PW26, 140 main, 42 pilot, floats set to 22.5 with gasket removed and measured from the mating surface, floats seem high to me btw and not sure if floats aren't the wrong ones. Timing is set and points fire a couple of degrees advanced (or before) LF. Runs well and idles well ( with stock intake tubes and filters installed) and advancer is confirmed to fully advance by 3000 rpm via timing light (but is slow to return to idle the weak spring issue). Needles are in the second clip position from the bottom (per LM recommendation?) and I am at sea level with 80 + degrees ambient temps. Yes slides are in properly.
Throttle application (slow or fast) results in rpm drop to stalling (if you don't let off) from about 3500 rpm.
I have tried the 26 mm float position and different clip settings with not any much better results.
Yes I've checked the passages and cleaned the carbs ( a couple of times).
My assumption is that I should be coming on the needle at this throttle setting (1/8-1/4 throttle and above) but yet are either going very lean or flooded rich (I say lean). Seems to act like a intake leak but I have done a solvent spray test and get no RPM rise from spraying either carb.
So I place this problem in the hands of the group (even though I don't frequent this boards as much as I used to, sorry).