[MSFS2024] Airbus A330 (-200, -300, -300P2F)

I’m struggling calibrating my throttle. It’s only a basic Thrustmaster HOTAS, but using the EFB tablet I’m setting it to reverse thrust not in axis, then calibrating the different throttle positions, idle, clb, toga etc…

No matter how many times I do that, if I bring the throttle back to idle on the joystick, it goes into full reverse thrust. Then if I advance a few mm, I jump straight to nearly 30% thrust.