Mamiya back disassembly help

I have a broken RB-67 120 insert I want to take apart. Does anyone have an exploded view they could scan and send my way, or just information on where the screws are all at? I'm guessing I need to peel off some leatherette. My goal is to just see how these work and also to take the wind lever from the broken back and put it on a good working back as a cosmetic upgrade.

Any help much appreciated,

Ed

Ed,
I have disassembled one RB67 Pro S back. I think I have a photo somewhere. Can you upload a photo to this forum? If not, PM me your email and I will send you what I have.
Gerry