[dana]

I have the fms 392 crate motor.
I received some bad advice and had the holley 750 double pumper 'tuned'. I thought the car was very loud in the beginning and then it started to 'pop' when downshifting. It was bogging down when I stomped on the go fast pedal.
I found out they put 77 jets in the primary and 78 in the secondaries.
I went out and bought a whole lot of jets. I tried the 73 in the primaries and it is a whole lot quieter( relatively) and seems to run smoother and has better throttle response.
The question is: how do tell which jets to use?
Should I just take it to a dyno and change them there?
Is there a decent combo I can drop in until then?
Carb rookie.