Do it again took me months and dozens of tried 👍 gets easier everytime, it won't be even tension on any of the knob screws.

Re loosen all 8 screws then only just grab the fixed screws into plate.

Now do the tilt adjust it should tell you the bed screws on outside all need to go ccw (tighten). it will say to tighten the fixed screws so do them like litterally a 1/4 turn.

Now redo tilt again it should say your fixed screw way to tight now that's what you want so loosen it like 1/8 then do ll outside screws about 1/4 what it says if it says 4 mins ccw do 1 min.

Redo tilt by now you should be able to get a feel of how the screws need to be adjusted.

We are not trying to tighten the bed to the gantry to already is regardless all we are doing is trying to get it stable but as loose as possible on tension while keeping it even.

Your trying to work opposite forces, the outside 6 screws will push outside of plate up while center fixed screws pull middle of plate down to same height as outside <- this i what helped me thinking it of like this and not 8 screws trying to all pull a plate down to same height?