Vehicle does not track straight when using manual mode

Hi, I’m build a boat, with 2 thruster, running in skid steering mode, using the pixhawk6x, version ArduRover 4.5.4. I tried the instruction here Save Steering Trim — Rover documentation (ardupilot.org) can improve, but it did’nt work. I have the log here: 2024-08-03 10-15-51.bin - Google Drive.

Thanks for helping