Hmmm, your innovative base design makes me wonder if you could machine pins or channels into the bottom of the baseplate (not interfering with the o-ring, of course) and adding some supplemental flow via barbs on the side of the bottom brass section. Would that work or add additional cooling? Of course, if you make the copper too thin then there will be a point where the heat won't spread out...
ill try to find it in the thread somewhere..
umm...if i remember correctly..he said something about it helping keep temperature spikes from happening... but dont quote me!!