Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
But can it bother performance, compression et al?
No, they'll be fine George as the clamp down into the copper exhaust gaskets
A lot of the time the old copper outer exhaust gaskets set like dark concrete and look like part of the head taking severe prodding and levering to remove, many times i have found 2 gaskets in the hole!
Has a previous custodian filed teeth in them to id for each cylinder ?Perhaps owned by a dentist previously