Amazon: Steering clunk...

[Faust]

I’ve got an annoying clunk coming from my steering system.

I’ve replaced both track rod ends in the last couple of weeks, all the tie rods are about a year old and the steering coupling (collapsible type) is in good order. There appears to be no play in the idler arm (bush was replaced 5 years ago).

I got my missus to turn the wheel whilst I checked for any obvious causes: the ‘clunk’ appears to be coming from the steering box. With my hand placed on it, I can feel vibration on the outside of the casing. It seems to be most prominent with the steering wheel turned 80% to the right.

It’s full of the correct oil and there appears to be aprox 4 turns of adjustment on the top screw.

Will I need a new or replacement box of is there a way around this?

I note that Brookhouse sell re-bushing kits. Is this likely to help? Easy job? (never messed about with a steering box before and I don’t want to screw it up!)

Any thoughts or suggestions will be appreciated as always.

Car is a 1970 133 if this makes any difference.