My Embryon was working well until this evening; I had to lift the playfield (to put a couple loose screws back in a slingshot kicker mount) and after that the outhole kicker and flipsave flipper wouldn't work. (knocker doesn't work either, but that coil has been removed.)

What I've done so far:
Run through solenoid test to isolate it to these 2 (or 3)
Checked fuses
Reseated connectors
Swapped in a known good driver board
Looked briefly at schematic to determine these solenoids aren't somehow isolated from others.

Anyone want to point me in the right direction on diagnosing this? Thanks in advance!

Awesome, thanks for pointing me down the right path! One of the daisy-chained wires from the slingshot I was working on came disconnected. Resoldered that, and everything was good!