Holley/Demon Carb stumble
I find that a lot of playing with carbs in the vehicle is tactile.
If it doesn’t “feel” like the motor is responding favorably to the changes....... it probably isn’t.
It is much easier on the dyno looking at the power, air, and fuel flow and just chase the numbers til it’s doing what you want.
It’s also way quicker to figure out when it’s too far off to be able to just “tune” it and make it good....... and that it’s going to need some “parts”.