Not yet. I'm going riding today, after that I'll dig back into the brakes. The rear rotor is just slightly out of whack, maybe .5mm each way. I think I'm just suffering from being stuck inside and not riding enough. I'll try lubing the caliper slides and then give a gentle "tweak" w/ an adjustable. If that doesn't fix it, no big deal. The front is pretty true and there are no vibrations when I brake. Thanks for the input