I just got a new Surefire L1 with the 10/65 light levels. Super light tool but I need a beam diffuser to make it even more useful. Some thing to soften and spread the light for use in very dark and close in situations. My older L2 has a very nice beam but is not near as pocketable so I went with the nice sized L1 which has a much more narrow spot type beam. I looked on the Surefire site and they sell several diffusers but none that are labeled for the L1. Does something exist that will easily work? I have heard rumors of certain water bottle caps that fit and do an adequate job. Is there such a thing that fits well? Any other better solutions area very appreciated as well. Thanks!