Head saver shims or gaskets.

[Geoff Kingston]

I have acquired a 401 where the cylinder head has been skimmed to the point that it is going to need a head saver plate or shim together with a head gasket or alternatively a thicker than standard head gasket, to restore the original compression ratio, the previous owner has calculated that 3 mm is needed.
I would be interested if anyone has been in this situation and how they overcame the problem, if a head saver shim was used does it have to be bonded to the head and what the best way to do this is so that the process is successful. I have seen a few firms in the UK who advertise custom gasket manufacture but have not used any so any recommendations would be most welcome.
Geoff.