Couple things I definitely should do at some point. I need to try and reduce the squeal coming from my Sega NNC Weiya monitor, but monitors are kinda spooky!
I've been looking at putting together a supergun setup as well, and bought a retroelectronik supergun before reading up on a bunch of negative opinions and potential issues with it sending too much voltage through to an OSSC so, oops, so now I'm waiting on parts for a supergun minigun instead.
Never had to wire up a controller for DB15 before either so that threw me for a loop, bought a Mayflash F500 to gut for that purpose anyway, gonna work on it next week.
Also been doing a lot of small stuff, replacing a capacitor here and there on some new boards I bought recently, and I need to test/socket the Z80 chips on my Silk Worm and Cabal boards because they have no sound and I suspect that's the issue on both. Some new Z80 chips arrived today so that might be saturdays job!