Remove the second base plate mounting screw:
I used a flat blade screwdriver to pry loose the distributor base plate from the distributor housing:
I removed the base plate to reveal the mechanical advance assembly:
I then removed the plastic access cover from the distributor housing so I could inspect the lock out wires. This is a photo of the good (well secured) lock out wire:
This photo shows the other lock out wire that is only marginally secured:
At this point I decided to remove the mechanical advance springs so I could get better access to the spring mounting posts and replace both of the lock out wires.
Trim and bend down lock out wire #1:
Install lock out wire #2:
Trim and bend down lock out wire #2:
Then I re-assembled the distributor.