Ok, this may be a dumb question to some but I don't know so, should I store my 1200 case open or closed? and, when I use it should I coat the o-ring with silicon? I ask this because I did have a case for a different camera and the instructions that came with it said to keep the case open when not in use and to always coat the o-ring with silicon - the 1200 instruction book says nothing. Thanks