The Quartic Gauge Couplings are all assuming the ZZgg vertex to vanish 
as in the Standard Model.

There is a known sign difference in the treatment of the a^w_0,n,c couplings
between the Monte Carlos EEWW (Stirling&Wertenbach) and WARP (Nicrosini et.al.)
for the WWg final state. The combinations use the sign convention from
Stirling&Wertenbach as it was used in the previous publications. The limits
derived from the nngg final state are basically symmetric and a possible sign
difference should have no significant effect the combinations.