As promised, done some additional test today, I tried to reproduce again the flap failure with draining high current from the battery (on land), down to 11,6V, but flaps worked properly, then, I flip, twist the relay board and connectors while operating flaps, but no issues. I then decided to turn the small potentiometer on the relay board few degrees clockwise, and went flying: after 5 hours flight with negative temperature, A/P on almost all the time, Ipad charging, etc, flaps worked well, even with no gas (reduce charging from generator). I will see in the next weeks if the problem come back. thanks Colin for your call last week! Very nice to see that somebody from the other side of the Channel is taking care of Frenchy issues!