You can actually disassemble those grayhills... depending on which deck it’s on (hopefully away from the switch) you *might* be able to solder on a super fine like cat5 cable or cut resistor lead to extend it down to the PCB. I know those pins are small so it might be tough. It’s be a shame to have to replace that as they’re really expensive. Also it’s next to impossible to find Grayhills right now, I think they have prioritized their production for medical equipment currently.
Anyway, I hope you sort it, the BT50s are freaking amazing, I rue the day I ditched 500 series and sold mine...