Cataract question
 

I looked through the old threads but did not see a good enough answer. I have a crt that I pulled the lens off of due to cataracts. I have never put them back together but now have a use for the tube, in a set with a dead 21FJP22. Should I: just tape the old lens on? use some sort of glue? what kind? just the perimeter? Whats the consensus?

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