I just wanted to post a big thank you for this thread!
Based on the info here, I just finished my first batch of 38/357 brass and they came out awesome -- looks like new brass.
I'm using the FART and kinda struggled to find a starting formula for the chemicals. So, in order to help others, here's what worked for me (admittedly it's only my first batch):
1 teaspoon of citric acid
1 Tablespoon of ArmorAll
Thanks again for the detailed info.