Hi gang, I spent some time this weekend removing the gummy old light seals from the back of my 6x7 and replacing them with nice new foam. I used the 2mm adhesive-backed foam from the $6 USD light seal kit from Micro Tools (http://www.micro-tools.com/). I've now got a few questions for those of you with 6x7's, 67's, etc. -- even if you haven't installed new light seals.
When I close the door against the newly installed light seals, I can feel the springiness of new foam rubber pushing back as I snap the door closed. This is what I expected. So far so good. However, when the latch fully engages and the door snaps closed, it seems like there is still a little bit of clearance between the edge of the door and the edge of this latch. That is, I can still press against the closed door and shut it perhaps another millimeter (?) or so. There's no looseness at all, and everything seems to be light-tight -- it's just that the new light seals are pushing out against the door edges and pressing it against the engaged latch. As I said, I can press against the closed door and force it to close about another millimeter. I'm just wondering if this clearance will interfere with the function of the pressure plate. So here are my questions: (1) Does this clearance I've noticed seem normal? Are you able to press against the closed door of your own 6x7 and get this extra millimeter of motion I've described? (2) With the door not closing completely, is it possible that the pressure plate will not be pressing down completely against the back of the film? (3) Should the latch be adjusted to eliminate this clearance I've described, so that it "pulls" the door a little more tightly closed? (4) Should the pressure plate clearance and/or tension be checked after replacement of light seals? (5) Should I have used 1mm foam instead of 2mm foam for the door seals? (The channel is recessed 2mm deep.) Heck, maybe it's not the resistance of the new foam causing this -- maybe it's actually the resistance of the pressure plate. Just not sure, so I thought I'd seek the collective wisdom of the 'hood. ;-) Thanks in advance to any of you who can shed some light on this! Bill Peifer Rochester, NY - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
