I think the Durst Printo could be a good option. Very simple construction and I have seen (perhaps here?) where someone had a broken gear 3D printed. It does up to 11x14 and is very compact. On the roller front I can’t be much help, there was a discussion either here or at the LFPF of a company that made custom rollers for the printing industry that would work. I got a Printo with a darkroom lot. It had been left for years with the chemistry in it- it was a mess. After many hours of disassembly and cleaning, I plugged it in and it worked just fine- even the rollers. For the most part these small processors were pretty simple affairs.
I think you are on your own for parts. Ancient history. The Durst modular units are very neat, but pristine examples command big money. I have a neat little Durst unit takes up to 8x10, originally configured for EP2 I changed the gearing to accommodate RA4. 3 bathes dev, stop, blix. Washing is done manually, I use a nice Ilford dryer.
I think you are on your own for parts. Ancient history. The Durst modular units are very neat, but pristine examples command big money. I have a neat little Durst unit takes up to 8x10, originally configured for EP2 I changed the gearing to accommodate RA4. 3 bathes dev, stop, blix. Washing is done manually, I use a nice Ilford dryer.