Thanks Ki,
We looked at what the ebay seller in Turkey offers and drew the same conclusion that the black "plastic looking" hold downs would work while the longer Studer branded metal ones probably would not - no fins. The whole assembly is missing on each turntable, so they will be getting new screws and springs as well as the hold downs.
Hi Doc:
Although the Revox spindle assemblies should be readily available, if you run into problems in finding them, please let me know. One of my older A810s came with the same type that I can remove and send them to you.
On the other hand, looking at the photo of the G36 at the top of this thread, I don't see the usual three pronged fixed wings as a part of the reel turntable. The Revox type spring loaded spindles would need these fixed wings. Please let me know if the G36's reel turntable has them.
Below image shows Lyrec Frida turntable with the normal fixed three pronged wings and transplanted Studer metal spindle.