I don't doubt that, Jeff. I was just thinking along the lines of it being difficult to get someone to write for a publication of a group they don't belong to.
I can ask of course, when I see them next. I can help ghost write an article, but I think it's preferable to let people discus their own models.
The scratchbuilt WTC/dive module is owned by Alf Blake, and is fittted into a GRP 206 hull. The hull is produced by Nigel Edmonds (AMS chairman, and a very good sub builder). It uses twin Engel tanks (750ml, by the looks of it) and the TMAX system, the periscopes are motorized in a way similar to your Typhoon- i.e. they go up and down together, the main drive batteries sit underneath this mechanism in a sealed box.
The sealing system is o-rings, radially compressed, and the endcaps are prevented from popping off courtesy of external threaded rods, and retaining brackets. Very similar to how Sheerline seal their modules, but they use axial compression and flat rubber seals instead of o-rings.
I didn't take any more pictures of that model I'm afraid, but there is nothing paticularly elaborate about his design. It's still a work in progress at the moment.