I have shot two 1951 Kodiaks with the aluminum and 2 Grizzlies, just to experience it-they shot fine; but I only put a few arrows through each-except a Grizzly that I shot all summer. For me, the issue was more of metal fatigue..........after a while the bow took a set-just like a self bow; and that can start to happen anytime. So buyer beware should you decide to shoot one. I have heard lots about the de-lams but never experienced it personally; so I agree with not shooting alu bows, just a different reason.
Chuck is right 7" brace for a 64" bow-just measured it too.