The picture above of the partially-disassembled Hi-Matic 9 looks very much like what I saw when I took apart a dead 7s. As far as I remember, it was pretty straightforward to get the front elements off---I just kept taking pieces off until everything was out of the way---but getting the shutter detached from the body was a bearcat. I think I ended up cutting wires to achieve that part.

I've got the lens components in a bag in my "misc parts" box; there's gotta be something I can do with them. I just haven't figured out quite what it is yet.