I have a much earlier Edixa to service, it's a 9x12 camera with a focal plane shutter, designed to be able to switch from the FP shutter to use the Compur leaf shutter the 135mm f3.5 Tessar is mounted in. It's really a German Press camera.
I'm surprised that you can't find a repair shop in the US, we are luckier in the UK, after all event the Leica factory send their restorations to be done by Malcolm Taylor in Herefordshire, and companies like Ellis Newton will tackle just about anything.
Ian