One more thing-
GX-16 can be used in place of the switchcraft connector, it fits if the screw part of the connector is oval-shaped.
And I somehow managed to gaslight my Ubox 100v into making it think pitch was roll, vice-versa. I assume that I've either done something I shouldn't have, or I've messed up on IMU calibration.
Once I get this whole thing figured out, I'll post a more detailed write-up on my board as it currently stands.