Hello all. Thanks to all for your imput. You have put my mind at ease. Hopefully no unseen damage has been done and me and my alfa will have many more years together

. It always pays to check these things out though.
The garage that I used are actually Alfa specialists and have all the correct tools for locking the cams. They acted very promptly and efficiently in sorting out the problem.
Watch this space for further postings and a few pics.
Barrie