Hello again,
Not sure exactly what specifically fixed it, but something fixed it! I tidied up the couple of messy area and had a couple of near death experiences with resistor leads that I was expecting to break off when resoldering, but somehow didn’t. Thanks for the guidance!
Follow up question: since I did the tweaks to the board after I’d already jumped the pads, do I need to go back and recalibrate the trim pots… or is it good to go as-is?