I managed to make two flights and add 1h40mn.
As climbing to altitude was not possible, I tested the autopilot. Somme tweaking to be done but it's working correctly for the time being.
Before flying I found why the VOR had a very small range, the antenna was not correctly connected.
I also found why I might have problems with the calibration of the right magnetometer, my PDF is working in reverse on the pitch axis. I'm wainting for some news from the manucfaturer.