Headlight goes up. Won't go back down., What is broken here? Options

[VegasRacer]

Both headlights pop up as the German engineers intended. Only the left one returns to the down position with the dashboard knob. The right one will go down using the knob on be back of the motor.
What is causing this malfunction? (IMG:style_emoticons/default/confused24.gif)
There are no obstructions. The usual suspect pivot is intact.
Is this a sign the headlight motor is going bad?

[Maltese Falcon]

John @VegasRacer we had a similar problem and after process of elimination it turned out to be a tired 50+ year old (left side*) electric motor.
*Rights and lefts are dedicated/can't be swapped. I had a few spare headlight motor assemblies around in the workshop>>found a good working left but with chopped wires. While re-wiring, soldering, shrink tubing, I did open up the mechanism for a look. I found that all of the lube that usually sits on the printed circuit 'Disc (assists the moving points to glide while operating) had migrated into a big lump at the bottom. Basically cleaned up the dirty old grease, cleaned the disc and reapplied a thin film of lube; then reassembled. If you do buy a surplus headlight assembly I would def inspect/tune up if needed (IMG:style_emoticons/default/thumb3d.gif)