Help! Thrustmaster 458 pedals cause steering to turn right?

Evening all.

First post - sorry I have tried to search for an answer but no joy so far.

I have acquired a nearly new Thrustmaster 458 steering wheel and pedal set, set it up for a rare evening’s gaming whilst the wife is out… and its broken!

Wheel works fine, however when either the accelerator or brake is compressed, it causes the steering to turn hard right on screen? As a result, its unusable!

I have tried a hard reset on the Xbox, unplugging and replugging the USB and the pedal plug - any other ideas what may be causing this please or a solution?

Thanks in advance!