I will keep playing with the seeking. It depends on the radio being connected right now, I may be able to remove that requirement.
Treble and Bass are in the command set. If it turns out they do nothing I’ll remove them.
From my findings (and verified elsewhere) the radio offers a range of 0-90 for volume, bass, and treble. Right now when you adjust the sliders that will be the volume set when the radio powers up. The slider directly adjusts the default start volume.
I’m not sure how I would do log vs linear… It’s another area I’m not very familiar with.