Thanks for all those of you who tried to help. I really appreciate your efforts.
I’m going to give up on this for now. I switched to a HOTAS this afternoon (T Flight Hotas One - yes, I know!) and completed the initial training missions.
To be honest, as an old guy, the spinning and movement was pretty gut churning without headtracking and I had trouble enough with the combat missions just trying to keep the targets on the screen!
I had a real issue with headtracking in Star Wars Squadrons. It works as expected, but I find I get hugely disorientated in combat.
I really like headtracking in MSFS which of course is much slower paced, but even then I sometimes have to switch it off.
If I do subsequently find a solution I’ll post it here for future seekers.
Thanks again everyone!