This always takes WAYYYYY longer because I can’t use GS without cyanoacrylate glue, and the CA glue requires a respirator. The 15+ year old one wasn’t fitting great and needed new cartridges anyway so I picked up a new one and got to work cleaning up problem areas…
Patching in missing facade. Filling in gaps in the edge of the stone base, and gaps in where the buildings joined. The GS needs some filing and reshaping, but the basic shape is there.
This remaining gap along the stairs needed patching. The small piece in the bottom right corner was always going to be a weird fit, but I cobbled something together out of a dozen pieces that sort of worked. It fits in the corner nicely and a hid some of the small remaining gaps with 5-minute epoxy and some of the terrible/cheap Cost-Co cat little that I saved from 20 years ago!!
That odd little corner piece is going to be serving an extra function, as there’s a part that it’s out of line-of-sight that I can use to hide a switch for lighting. First pic I’m checking the positioning of the switch, then securing the switch into place, and finally checking the accessibility of the switch for after installation. Good enough.
I should note that the switch was salvage from my old Chaos Dwarf airship. I scavenged as much as I could from it, as there were a lot of very good parts all still useable in future projects 
I decided the piece needed lighting. I’ve ordered 3mm flickering LED bulbs for all the sconces, and for the recessed areas of the sewers and out-of-sight spots inside the big house there will be LED strips. Of course this requires making a lighting plan and starting to notch out areas for wires.
The stairs at the back will get their own bright continuously-lit lighting, then a couple of the middle sections will also get some continuously-lit lighting as well, and the one torch spot on the wall will have a flickering LED. I also cut some space for where the wiring (in purple) will transfer into the upper portion of the diorama.
Here’s close-ups of the cut-out sections for LEDs and wiring. Luckily these are so far down there’s never going to be a viewer looking up at an angle that will be able to see far back enough in the lower levels to see the gaping holes in the ceiling. I must still assert that there is no evidence of these rat-men! These gaping holes down in the sewers is nothing more than normal wear and tear and any assertions to the contrary is pure hysteria!!
With the sewer pieces still in place I traced the openings onto the back of the faceplate for the piece and then carefully cut out the openings. I still need to come up with some kind of additional design for the faceplate to go between the openings - like bat or gargoyle heads. I was thinking of something inspired from Cursed City, but I have ZERO skills with making STL files for 3D printing.
A few final images of some of the cleaned up areas…
Re-assembled and almost ready for priming… looking at it now I want to adjust the angle of that floating structure on the left… but that’s just how the epoxy set around the threaded rod argh!! I also need to give some thought to a backdrop.
~N
[UPDATE]
After stewing for several hours about the crooked suspended tower that’s fastened into place via a threaded rod and epoxy… I decided to do something that I KNOW was stupid and beyond unwise - I just marched into the hobby room, secured the sides of the tower and just started applying torque to it. Even as I could her crackling inside like some of the plastic letting go I kept at it because I was determined NOT to have a crooked tower. Even as I could her more cracking from deep inside I just kept doing it, all the while knowing it was a really stupid idea. .. then, more cracking, kind of continuous, and louder, and then it shifted!! There is still an incredible amount of resistance on the piece, but I can feel it turning through the rod. I think I may have torqued the threads free of the epoxy and I’m now just adjusting the angle via the threads of the rod… beyond belief, it’s straight!!
Wow. I can hardly believe doing something that dumb worked. I’ll blindly apply this approach of brute force and wrestling them into submission for all future projects, in the same way that if I had broken the piece irreparably I’d still have learned nothing from doing it and done it the same way in future anyway