So...I bought a set of 2007 Dura Ace wheels off a teammate and I love them; The wheels are stiff, light and fast in general. Here is the problem though, in three outings I've had two flats and the tires seat so damn tight (that has its +/-) that I can't get them unseated without big metal levers (that I don't carry). I'm running kevlar tires with tubes, anyone else have this problem with these wheels? I used the tires on the previous wheelset without a problem. I guess I might have to bite the bullet and buy the tubeless tires.