changing bulb on old square recessed light
I am having trouble getting into the light to change out the bulb. They date back to 1974. When I jiggle the glasses each of the 4 ways , it seems to get caught on something, so that I can't get into the light. Is their a trick?
This seems like such a simple thing, but I've worked on 2 lights, and am unable on both. Could it be a swelling of the plaster ceiling?