The Subharmonicon pulls 360 mA +12V.
The Voltage Lab pulls 525 mA +12V.
The MSCALE pulls 6 mA +12V.
So, we're up to 891mA @ 12V, very close to the limit of the uZEUS 13.5V 1000mA PSU. Step up to the uZEUS Boost 3000mA 13V Universal Power Adaptor.
I grew my first modular build into four 104HP skiffs, each powered by a uZEUS. It was my experience that a conservative approach was necessary and often found myself needing more power per skiff. The uZEUS was often temperamental with certain modules, mostly those wanting more and consistent draw and operating on arduino/pi/microcontroller/single-board type builds. The flying bus cables were kind of a drag to manage and keep organized. I still have three of those skiffs but now only use one with a 3000mA 13V PSU.
Good, clean, consistent power is vital.