I have that same camera. I have worked with the meter a little, but between the three trimmer resistors, can't seem to get it to read correctly in all light situations. Due to manufacturing tolerances and or wear, the back does not fit perfectly and this allows some light leaks. I use some black tape over the joint at the film-take-up spool side of the camera. You might want to check this in bright sun with a short roll of film. There is no foam seal or felt seal there to replace.