God you all are like little kids bickering, get back on subject.
The octagonal Airtime valves are only to be used on Orange bladder material, i am surprised it has not peeled off your bladder, even with boiling water and everything.
Recently at Surf Expo www.FixMyKite.com , from www.kiteboarding.com showed me some new valves they have with much wider bases, so you can put them over skirts that are not coming off. Also, the Tuff Bladders and Valves (Fix my Kite brand of bladders and valves) are made with Tear Aid and can be sticked on any kind or brand of bladder. You should of course always clean the bladder very well with alcohol before sticking any valve on.