Well, I fixed it. I previously was using all CH controllers, stick, throttle, and rudder pedals. And the rudder and nose wheel steering was working. I had then switched to my Thrustmaster Warthog stick and throttle but was still using CH pedals.
I figured maybe that was a problem, mixing things.
Before I did anything, I checked the operation of my CH pedals with the CH control manager just to be sure they were operating properly and they were.
I then went into the mission builder made a little test mission with the F-86 and the P-51 just to check the operation of the pedals on both aircraft. The rudder pedals in both failed to work.
I then went into the axis side of the controls in game, and deleted everything in there, and remapped all, Elevators, throttle and rudder.
And it worked! Don’t know why but I don’t care, I can now get back to enjoying and I do mean enjoying this much improved (In my humble opinion anyway) sim!
Thanks for the replies.