On Feb 11, 2006, at 7:18 AM, Francis Tang wrote:
I had the MX serviced three years ago by Pentax Service here in the
UK.
Admittedly, since then I've hardly used the camera and it did spend
most of
those three years in hot and humid conditions in the Far East.
Fire it a bunch of times without film. It may be sticky just from
lack of use. If the mirror doesn't go all the way up, help it gently
through the lens mount with a clean cotton swab. If this doesn't
make it happy, time to go back to service.
Bob