An example of the difference a service can make to the shutter speeds of a camera - in this case, an RTS II.
Shutter speeds before service:
Shutter speeds after service:
And, although not the sole reason for the slow shutter speeds, this is the dirt, on the end of a slip of paper, removed from the shutter magnet which can cause the magnet to be slow in releasing the second curtain and cause the shutter speeds to be slow and, often, more erratic.
