Thank you Gentlemen for your most helpful suggestions and experience,
I'm quite surprised just how thin the flats are on the pin, but I'll try my mole grips and see if that will hold the pin, Andy, I was thinking the pin might be damaged as the rubber of the silentbloc bush seems to be squeezing out of the sides, but you're probably correct that the inner sleeve is taking the impact, I suppose the inner sleeve of the bush is taking the impact, so the pin might be ok.
for the life of me why didn't Lancia use a proper hex head on the pin, as I can't see why it would foul anything.
As it happens the nut came loose easily, but then came the problem of holding the other end when the pin started turning.
As I've got to take the bar off would it be better to change both bushes?
Thanks Frank I'll probably take you up on your kind offer when I have the bits.
Brian
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