...after the 4th test film through the camera I'm sure the shutter isn't opening at 1/500 and 1/1000 sec. At least, not all the time. At the end of the roll the shutter did work, even at it's shortest times. In other users experience, is this problem likely to clear itself by exercising the shutter or is it time for CLA?
I believe the camera has been idle for about 20 years.
I believe the camera has been idle for about 20 years.