Help: Air bubble, pump pressure switch triggered

1st 2 pictures are the current version…

3rd and 4th pictures is the version before (no airlock but 99C on cpu no matter what)

The last are the build before zmt tubing (last working one)

I have 2 D5 pumps and 4 radiators and seeing no flow

Only 1 reservoir shows fluid movement… and I have a giant air bubble in the GPU that doesn’t want to go away

I can’t open the reservoirs without water fizzing out or rushing out of the fill ports

I have rebuilt this loop so many times and this issue has been plaguing every rebuild

Side note: my loop used to be brass tubing and I decided to go back to zmt tubing cause I will be moving to rent and I won’t be messing up the walls with coolant unlike my parents place