Editing question

If I remember correctly it is between a -18 and -23 RMS with a min of -3dbtp.

That sounds like it should be simple, but until recently,we had no way to directly set RMS (loudness). Now we do.

The top of this posting has the current recommendation for producing an ACX-compliant posting.

Bumper sticker version:
Rumble Suppression > Set RMS > Set Peaks > Submit to ACX > Make a million dollars.

Note the top of the recommendation has you making a safety WAV copy of your work. If you do something that requires you to read the work again, you’re totally doing something wrong.

Also note the entire second posting is all the trouble you can get into if you have noise problems.

Koz