Lost altitude during aerobatics rolling circle

ArduPilot Lua Scripting
1

Hi all,
I try to execute the aerobatics rolling circle but the plane lost altitude
the altitude of waypoint is 60m

Height
Height1280×618 26.2 KB

during rolling circle, the pitch had head down
Roll_and_Pitch
Roll_and_Pitch1280×618 31.4 KB

I check the servo output, looks rudder had wrong direction during rolling
the trim point of rudder is 1600, but it go to the wrong direction and plane lost the altitude very quickly
Servos_1-4
Servos_1-41280×618 40.8 KB

could anyone help to check why the rudder have the strange behaviour
log file also attached 00000014.BIN - Google Drive

2

Check that the rudder is correctly configured for automatic control according to Four Channel Planes — Plane documentation