Motorcycle V-Twin CV carbs riding poorly on 1/4-3/4 throttle after carb rebuild

Background:

The bike Suzuki Intruder VS1400 model 2000, ran fantastic, but started to stall on idle when I used old fuel in it.

What I did:

I cleaned the two CV carbs. Didn’t replace anything.

I found the floats too high, I adjusted them according to factory specs, about 2mm lower.

Resynchronized the idle and throttle using Carbtune from Morgan.

Adjusted the pilot screw using Colortune from Morgan also.

Symptoms now:

• Idle runs great.
• Little hesitant when snapping the throttle on neutral.
• Under load, 2 gear and above, 1/4-3/4 throttle:
  • Hesitates
  • No power
  • Pops on acceleration
  • Heats up more than usual.
  • Gear rattles
• On WOT, it picks up power after one second in WOT, but not as strong as before.
• Spark plugs are yellowish but clean and dry. No signs of melting. but I didn’t ride the bike other than 500 meters test drives.
• I sprayed starter spray on the intake boots, no rpm difference, no intake leak as far as I can tell.

More information:

• I can’t tell which carb pops because both exhausts are on the same side.
• The diaphrams are in good shape, I can lift the slide by blowing into the carb intake ventury, and it goes down normally, with some suction sound. which I believe to be good.
• I cleaned it with brake cleaner and compressed air, it was already clean, no plugged holes anywhere.
• I’ve repeated the procedure another time in case I missed a step, but no change.

Any ideas what could be wrong?