Hi all - I've been experiencing shuddering/throbbing brake issues with this wheelset. I've got Dura Ace brakes too, and the pads are new but I get a real "pulsing" feel when braking. Its pretty disconcerting and sometimes means that the rear locks up it it grabs the rim. It almost feels like the wheel is out of true, or has oil on half the rim, neither of which is the case. I've used Ultegra wheels and the issue doesn't occur, so its got to be something to do with either the rim being faulty, or the brake pads being incompatible. However the rim on both Ultegra and Dura Ace C24 is alu...? Anyone else experienced this issue? I've had a few pairs replaced as the supplier agreed there was a problem, but it keeps happening with each replacement. Pulling my hair out - the wheels are great when you don't want to slow down!