You, sir, are my new personal hero, and if we were both that way inclined i’d offer to marry you.
I gave your very specific instructions to a small independent garage that i’ve used for years (I’m not so hot with the whole mending it yourself thing - just ask the missus!) Within 5 minutes the old bolt was out and a suitable replacement installed. Steering feels brand new.
As a long time customer the cost was ... zip, zero, nothing.
I am a very happy chap today.