i'm fairly new to martin bows and i have a question i hope somone will ans. for me. i have a cougar 2002 and i need a longer DL. i have adjusted the modules as far as they will go. i think i have the B cams now. it says B on one of the modules. my question is can i replace just the modules, or do i have to replace the modules and cams to get a longer DL. I need a DL i can adjust from about 29 to 30 inches. thanks