We've had this light for several years, and just now all the bulbs are burned out. There is no visible way to remove the globe. There is about an inch between the ceiling and the glass, and there are three white plastic clip things. Two of them don't budge at all, and one moves just slightly, but not enough to make a difference. I've tried turning the entire fixture CCW, pulling the clips outward, inward, and side to side. There doesn't seem to be a spring. Help!