Thanks for that steve - Yes, sorry about the photo, I posted in a bit of a rush, I reduced it to keep within the allowed limit and for some reason it went a little blured, but you can see the metal shim is missing - I've updated the photo now.
That is exactly what I thought - mines missing the fiber spacer gasket and the metal shim - I'll have to make one up. I have bought a new pump and some gasket paper a while ago (waiting for it to arrive now) so will fit them all at once when it arrives.
Thanks for your time Steve :wink:.
Kind regards, Matt