Pat,
Just for my curiosity and education, have you been able to remove the lens from this type of light with out taking it apart? If you have your a better sewing machine mechanic than I am ... but that don't take much
.
I have one 66 with that light that is complete and factory original. I tried doing exactly what you said and that silly thing would not budge. I was trying to figure out how to put the lenses back in the two lights that I got that came without them. I got replacement lenses from the LSMG.
No matter where I pushed and turned the lens just would not come out.
That's why I did it the way I posted above.
Joe