I'm trying to replace my interior ceiling (above the rear doors) and map/reading (above front center) light bulbs with LED's. Having a real hard time taking off the plastic housing for both. I see that there's a screwdriver insertion point but it doesn't seem to budge when I pry at at it. Anyone know how to take these off? They both come partially out but it seems like something is holding them from popping out all the way.