[spinelll]

1930 Coupe

That's just it, they don't go back that readily. They don't return when the pedal is pressed. I've previously tried what you suggested, even tapping the backing plate with a rubber mallet without luck.
The annoying part is this:
1. Let's say, for example, I adjust 3 clicks and get a heavy drag.
2. I back out 1 click, still heavy drag.
3. Repeat step 2 a number of times and I still have a heavy drag.

Makes it difficult and brutally time consuming to adjust.