HeeWing T1 VTOL Matek f450 wing no yaw response

Hello

I got a HeeWing VTOL T1 and all seems to work fine but the problem a I have is that the YAW is not responding when QStabilize. The plane flies quiet well but I just can get the Yaw respond, on mission planner I can see the yaw responding.

I’m trying now to fly with no GPS just to make some tests and later active the GPS that is already installed on the plane.

I deactivated some parameters to be able to arm the plane with no GPS.
ARMING_CHECK = 780882
AHRS_EFK_TYPE= 0
AHRS_GPS_USE = 0

Hope you can give any advice

Thanks

Matek_f405_Wing_VTOL_Hee_T1.param (22.0 KB)