cheers mike, they are nice and stiff and also very quiet which is a big change from the pro 2's I had on my old bike!!
Even with big 2.4 Conti Mountain Kings and tubes in , they weigh less than my mates tubeless 2.2 Bontager Race lites with Bontrager Jones tubeless tires on, much to his chagrin!!! 
All in all I am overjoyed with the bike, it is the first one I was truly excited to own, still a couple of shiny bits I would like to add but that will have to wait!!