I've just finished putting together the Poker (and am typing on it now). Very nice solid feel - even more so than my Leopold TKL. I will probably add o-rings since I'm used to them with my normal keyboard, but no complaints as is.
I found some screws at my local hardware store that work. They are 1-72 x 1/4 flat head type (very tiny!). They are not the screws that the Poker normally uses, which have a built-in washer, so I used separate washers, which were a bit of a pain to deal with when actually attaching the finished board/backplate assembly to the case. The assembled backplate/PCB makes it difficult to position the screws into the holes, so I eventually made a small cylindrical guide out of paper to help position the screws/washers and to prevent them from sliding underneath the backplate.
Also, before installing the board I did file down the center screw shaft that interferes with a bottom-mounted component on the board. I filed it down until the board sat flat in the case. Apparently I didn't file it down enough, since the first time I tested the fully assembled keyboard in the case it didn't work at all. (It had been working fine when I first tested it outside the case.) I guessed that the filed-down shaft was still high enough to be shorting the board, so I disassembled the keyboard and placed some insulating material over the shaft. The reassembled board then worked fine.
The only other problem I ran into was my own fault - I started assembling the backplate/PCB before realizing that the stabilizers needed to be installed on the PCB first. I had only soldered in a few switches in at that point, but it was a real pain to desolder them in order to start over. Overall, speaking as someone who has done previous DIY electronics stuff (but not much keyboard modifying), the soldering was probably the easiest part of this whole project.
Anyway, I'm quite pleased with the end result, and have now got my eye on the GH60...
