|Carefully lift up
on the outer plate to expose the light seal set underneath.
when removing the outer plate, you can dislodge the following parts,
#1 latch blocking spring
#4 exposure lock lever
#5 exposure lock lever spring
#6 adjustment shims
Some film backs don't have shims, however if shims are
present it is desirable to keep their placement as from the factory.
You are replacing the mylar foil # 3
and light seal foam # 2. Fold the plastic foil on the
crease slightly, insert the foam between it and install the new seal set
in position as shown on the left.
Replace and carefully seat the outer plate and replace
the 9 screws.