Ok dude, what have you got going on with that stuff? What it's exactly what?
I would run the overflows to "one side" of the sump, the one with your skimmer. Only "one tube per each overflow" and filter sock. If you want to valve them for maintenance, that is the only time I wouldn't run them wide open! Then,I would run the return from the opposite end of the sump.
I would put two filter sock mechanisms (on the one side) in there and let it flow to the other side. If it were me, I'd still do the floss blocks in the bubble trap "coming from that side" simply because you've got a lot of flow. Then, just let it run it's course and you shouldn't have any bubbles, but the sock "has to be higher than 2 inches off the water surface".
All that's doing now, is the water is coming down and the flow hitting the sump water, splashing and flowing right over the sides.
For the return nozzles, run "one" line to a tee. After that tee, place your valves for flow equalization or preference.
That's it, you have to think about how this stuff works, especially when it comes to valving and filter mechanisms.
You may have to mess with the depths of the tubes of the output, but it really shouldn't have to go far below the water surface in the socks.
From Note 2 on Tap 4