I know this topic has been beaten to death, but i got rid of the dyna beads in both my tires. They did not work. I would get a vibration that would oscillate from front to rear and back at any speed above 85mph.
After unseating the tire, i found that the beads were stuck in place and covered in black stickyness. They were not freely rolling at all. I had to jostle them pretty hard to get them to free up and drop to the bottom of the tire.
My theory is the tire compound is too soft for the beads to work properly, combined with the inner tire ridges impeding the beads from rolling freely.
I have another bike with bias-ply metzlers on and they are balanced with beads without issue.
Let me know what you think.