Disassembled and reassembled the rings:
1. I cut a wood block (photo) to use a needle nosed pliers to remove the pair of wire retaining springs.
2. Removed the pivot adjusting screw.
3. Removed the two C-clips and pivot pins.
4. Separated the two inner rings and bulb assembly from the outer ring.
5. Removed four flat-head screws and separated the inner rings to replace the bulb.
