hello Richard,
I finally got one via
thomman in Germany(there may be a French version) tho it was more expensive than a generic yet searching was turning nothing useful up.
problem being it took so long I have struggled to put it all back together, and got so so close in a recent attempt until I managed to loose a vital screw overnight.
If anyone has a clue how I can source and replace this localy I would be so gratefu before I go back to thomanl.
I am hopeless at measurements (an adhd thing) that my head spins at this point.. Thomman even sent me a replacement record button, which tends to fly free when disassembling the zoom.