Oops. I tried just tightening the retaining ring down on top of the 7135s on several flashlights.
And — butterfingers! — have dropped several of them and broken the 7135s. Details at:
Having now broken three of the 7135s by just tightening the retaining ring down pressing on the 7135s — and then eventually dropping the flashlight.
I’m going back to filing down notches (or else filing the corners off the 7135s)