Hi Ian, Brenva sit doesn't feel 7b, Chez's Arete feels more 7a, didn't realise Can Opener was a crack only affair as I normally use a pocket on the left (@ 6c?), I find Carbon Fibre nails but I'm shit at dynamic stuff more 7a ish.
To be honest I'm totally nit picking & being a bit petty, grades are only a guide one mans 7a is another mans 6c and vica versa.
I usually climb what looks good & try not to get caught up in this type of grade debate, but then I'm not a 7c boulderer.
Anyway think you & the other local boys have done an ace job on the bouldering front with new routes & info in the new guide.