I lowered the psi on both tires in order to get through my ride on Saturday without throwing my bike down on the side of the road in anger. That stopped the bouncing feeling but there was still more road buzz than usual.

What I don't understand is why that would be necessary -- why do the same tires need a lower psi on "equivalent" wheels? I am the same, my bike is the same, the tires are the same. When you read recommendations on tire pressure, there's never anything that tells you to factor in the wheel specs.