I need to know how to fix my headlights on an 81 vette. Right now i cant get them adjusted because i believe i need new bushings in order for them to stop moving so much.

 

So,..... are the bulbs themselves loose, or are the doors vibrating?
Could be broken springs on the bulb retaining ring, or the plasticnuts that the adjusting scews go into. It really is a simple fix. Let me know what you find.