Actually, one further question. I have three of the squash tail 9'0". All three are fst. One has black lettering and markings. One has blue. One has green. The black one is significantly heavier than the other two, despite it being the only one of the three that has never been patched. I suspect it is older. Are the older ones heavier? And if I special order new ones, is it safe to assume they will be the lighter versions?