Who mentioned the breeding filter? Are you talking about the video of the guy who uses three drawers and his beetle drawer has a screened bottom?? This is what I am getting ready to try now. Have you tried this way? with any luck?
I go in every day and pull out dead supers from my isolation box. (an old tacklebox with dividers) and replace them with new worms. You'll also find out that even though a worm as pupated that doesn't mean you will get a viable beetle. I sometimes end up with beetles with deformed wings. I guess this is just natures way of weeding out the bad genes.
One key to remember is isolation. You want one worm per cup until it is dark red or even black, (they can defend themselves at that point) then you can move it with the other beetles.
Also, little info. The males tend to have wings that that close at the butt...the females have fat butts, so the wings tend to not touch at the bottom, so they look like they have a little white patch between their wings.