NeutralFan
(NeutralFan)
10337
I’ve posted this before, but it appears you just need a small wood-carving knife to remove the retaining ring: What did you mod today?
Perhaps it works for some ZebraLights and not on others.
Maybe Bob_McBob would be willing to share his technique: Zebralight SC64c LE w/High CRI Nichia 219B R9080 $150