Bif....lets see now.... if indeed there is a change to having the spindle area raised, that would mean that with the outer ring and center weight applied, there would be greater tension on the record...more downward force. ..may be a good idea. I suppose if its a gradual slope, and the record plays well, its fine. If its more than a gradual slope, and that azimuth is affected, I would question it. I find that proper azimuth makes a marked difference for the better. Isn't splitting the proverbial hair fun? I would guess that the sound isn't much different..like the black wrap, or the change from a 9 inch to 10.5 inch arm.