I got my replacement set a few days ago. The first set had some major driver flex and caused the left driver to fail. The replacement has no driver flex at all. From what Dale told me, they got the acoustic impedance through the vent port matched to the driver diaphragm so there should be little to no flex.
I'm trying to get used to the sound but the mids are still a little too much for me. It's fine with some songs but not so much with others.