Well, that’s a bit annoying… I was many hours into the build and noticed that the instructions were calling out a couple of electrolytic capacitors…

Okay, but in reality, the silkscreen on the PCB differed…

Not quite sure what the markings are for C21, C22, and C54. The silkscreen indicates a ceramic capacitor, but the instructions call for electrolytic.

Time to do some research as time permits…