[Healeys] overdrive again

[Dr. C. Rubino]

This is the continuing saga of my overdrive problems.

Stopped working just before storage for the winter.
Checked electricals to find poor connection on overdrive switch
Overdrive works for about 2 miles then quits
Pull cover again and find that selenoid has shorted (may have been mice)
Replaced selenoid and works fine.
2 days later go to first car show of the season and overdrive stops working
after 3 miles.
At car show turn on key and overdrive switch and rock shift lever-no click
Drive home, park the car for 2 hours, turn on key and overdrive switch and
rock shift lever-CLICK.

Did I miss an adjustment here?

Thoughts are appreciated.

Carl
1957 (BN-4)L