A little update on my ABII and the scratchy knobs.
So, I emailed glockenklang a while ago and sent them the same video I showed here, showing how the potentiometers and knobs work on my bass.
They got back to me and recommended me a product they use at their shop and showed me where to buy it.
So I did.
Today I have used it on the bass and... It helped! All knobs are now nicely lubricated, they don't have that heavy feel to them anymore, though. But they turn very nicely.
So... Yeah. Yay!
[Invalid or Expired Link Removed]