CX-20 Nova and EKF

MP coerced me in to 3.2.

Flying in AUTO, mostly works, but i get EKF_Check-2 (subsys 16) in which I have to regain manual control to recover fly away (doesn’t seem to just land…)

Logs do show LAND forced after EKF error, ErrYaw is 0.8, AccY is a little high…

But I read that CX-20 doesn’t have EKF, and firmware may be looking at DCM, blah, blah…

Should I disable EKF for CX-20 (actually Nova)?
Or should I just use 3.1.5?

Or is vibration really an issue (causing ErrYaw 0.8)

[sorry, dont have log file with me]