TF-104G Ailerons d'ont work correctly

I downloaded my Starfighter recently through MSFS (Marketplace).

When I tilt my joystick to the left, the control flaps (ailerons) move up on the left wing side and down on the right wing side, which is correct. However, to my amazement, the aircraft does not do a roll to the left, but to the right!!! What is wrong here? How can I fix this error?

I would appreciate getting some useful support.

In full honesty, it’s a model plagued by small glitches, not necessarily their fault. Specifically to the ailerons, I had the same issue on v1.0 and 1.1, sorted by a recalibration of the joystick in Windows. Don’t ask me why, but it did the trick to me.