Hi the ceiling light in my bathroom is an led inset unit, one of the bulbs is out can anybody explain how to change the bulb it's not the ones with a circlip holding the bulb in fact the bulb doesn't move it seems the full light unit has to be pulled out the ceiling when I try this it comes out a little and stops I can see what looks like a spring hinge on each side of the unit but can't pull down further as the would cut into the plastic panels it's as if they won't push back enough to le the unit down any suggestions welcome I'm afraid I'll break the panel as you know they are thin plastic u n