Back again with my calibration issue.
Now calibration always fails.
I have upgraded the CEM60 with latest firmwares. All works fine apart in Ekos for calibration.
The calibration works very fine in PHD2 and I am obliged to use it for autoguiding.
I don't understand what the problem is. Looks like the guiding rates are sometimes taking into account sometimes not. Lately all the attempts to use it in Ekos failed.
Sound a very weird behaviour.