Okay that is a successful surgery! The Rudder pot was acting crazy even with a 50% dead zone looked like Jim’s shootin’ hand.
I’d hoped to get it apart, but the assembly was pretty complex, so instead I used a 23g hrt needle to precisely inject some IPA under the pot cover. Twisted it to share love, then let it rest before reassembly.
Now it’s lookin like Jim’s other hand: steady as a rock.