Graham,
I agree on the MOT guy but surely an MMC dealer would also check the king pins & understand about the effect of tyres on or off the ground?
John
I suspect "should" is more likely the word when it comes to some workshops John.
Somewhere on here are the photos Colin posted of the KPs removed from Ken's +4. I doubt yours are worn as much, but Ken had somewhere close to 80k miles on original pins...