Thanks for the input Bob.
Yes removing the ratchet will free up the stick but it needs a ‘swing arm and spring’ to centre it automatically.
I have tried Futaba services and a couple of other sources but am told that particular model has been superceded several times by Futaba and there are no spares to be had.
I am hoping one of our members may have a broken or unused Tx from which the bits could be salvaged if they are willing to do so.
Rick.