Joined: Aug 2008
Posts: 13,140
Likes: 2,162
From: Ann Arbor, MI
Bikes: 15 Kinesis Racelight 4S, 76 Motebecane Gran Jubilée, 17 Dedacciai Gladiatore2, 12 Breezer Venturi, 09 Dahon Mariner, 12 Mercier Nano, 95 DeKerf Team SL, 19 Tern Rally, 21 Breezer Doppler Cafe+, 19 T-Lab X3, 91 Serotta CII, 23 3T Strada
I'd think the torque spec is to not damage the carbon head, but I don't know for sure. I do know that creating stress risers on carbon can lead to bad things.
If a new post is an option, consider the USE Alien Carbon. Maybe there's a Commonwealth tax break, as these come from the UK. About £89.