Any UK (or Isle of Man) based builders need a steering shaft quickener (or, if reversed, a slowerer)?
I am aware of one that came into the UK from Speedway motors (I think) that is surplus to requirements (two were supplied , and billed - his vehicle only has one steering column).
The builder / owner with the spare isn't on the forum but I can connect you and / or send a pic if you are interested.
PM me.