>Evidently I was having a second bad day following the first, because
>my antecedents here were completely muddled. I was referring to the
>FG, which I bought in 'used but like-new' condition in a camera store
>in Detroit last month. My 15-year old FM has certainly had several
>hundred rolls of film run through it; it works great, but the frame
>spacing is starting to show a little unevenness.
Gary Hunt

Ummmm, too bad. The advance probably feels a bit loose, too, I would
guess (you must have used it a LOT!). So long as the frames don't
overlap, though..... (some irregularity of spacing is normal, especially
with the F3 - gone are the days of the F, F2 with perfectly regular
spacing, alas).