Yes, I got this detailed info from a technical bulletin that Triumph issued to dealers for introducing the new composite "Klinger" gasket.
The workshop manual figures are correct for the annealed copper gasket.
I'll try to find a copy of the technical bulletin, which also outlines the retightening process.
The bulletin is 9-79 and it also advises that the metal bridge between the cylinders is uppermost to the cylinder head face, not into the barrel sealing grooves.
Last edited by Rochdale Cowboy; 01-05-2013 at 04:51 AM.
Reason: Updated with TB ref #