To be honest, I’m not a fan of multiple retention screws. I tired that on my PVC sabers and I was not happy with it.
When the blade is out, can you freely screw the retention screw fully into the interior of the saber? For example, can you screw it down until it touches the blade holder (and would be sticking a good 1/4” or more into the interior?
If you are not binding up on the threads (a good taper hole) you should have no issue tightening the screw enough to get a good hold of your blade.
This is what one of my blades look like from tightening it down (so it doesn’t move).
C5B967B8-4F41-444C-A148-C82AF7576111.jpg
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