IIRC, 4-puck is all Tilton sells these days. The former shape of full disk which had 6 divided parts on the disk, just isn;t available anymore.. The centers are stronger too btw, with 8 instead of 6 bolts iirc, so more little changes have been done to the design at Tilton.
I'll just trust them to know what they are doing
Just reinstalled the Cup brace and for the first time, the scatter shield I had made a while ago already (needed for certain tracks here):