That is not correct cyberblitz, the filter does not have to be a snug fit;that would not be practical, as scopes of the same aperture can have quite different tube outside diameters.The screws are quite sufficient on their own.
If you listen to the video again you will hear him say that you might have a gap, in which case you nip up the screws.
raymo
Last edited by raymo; 09-01-2017 at 03:35 PM.
Reason: correction
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