Is there supposed to be movement in the electronic distributor pickup plate?
remove the rotor
remove the 2 blue screws and with a little gentile wiggling you can get the vac advance out of the dist.
lift the primary lead out of the housing
remove the 2 red screws
lift the breaker plate out of the dist
from there you can find out what is wrong
Red arrow is the adjusting screw
Blue arrow is the pickup pivot
green is most likely the pivot post
There is another plate under this part that will come out as a unit when you remove the previous photos red screws
This is the underside of the breaker plate assy
The red arrows point to where the red arrows were removed from in the first photo
the green arrow points to where the two parts of the breaker plate pivot about
all of the above photos are representative, not necessarily the exact parts you will find in your dist