Has anyone who has replaced their crystals taken any before & after pics of filter shapes? They would somehow have to find their way to a web site. Using spectogram, I'm not sure if I could recognize a shape that could be improved upon if I saw one. Or should I do as the tee shirt says - "just do it" and be done with it. My K2 is well over a year old. 73 Terry KF4FD K2 # 2008