I though this was excessive, but it’s good to have confirmation.
It was not too hard to isolate. I have three issues to solve:
1- Left elevon- two servos using the Royal servo matching are not well synchronized.
2- same with the right elevon
3- bad servo for the left main door

I will see how can I correct the elevons matching without removing the linkages. The servos are buried in the fuselage and can’t see how to easily get there.
Bought the plane used, so learning about it as I go along.

The graph comes from the Powerbox terminal software used to analyze the Core flights logs. check the Powerbox forums...

thanks