Hi there, I have a KL 90mm f/3.5L lens for my RB67 Pro-SD. Most of the 90mm K/L lenses I have seen pictured on the internet have the floating lens element, but mine does not. I would just like to know if my lens without the floating element is otherwise identical to the FLE lens? Was it an earlier version of the K/L lens? I can't find much info on this stuff online. Thanks in advance!