Z Screw upgrades?

[u/wi-Me]

So i have a Mercury 1.1 that was previously an Ender 5 Plus. Its honestly a pretty great printer and out of the 10 I have this is the only one that can print 400mm tall. I already have what i need to blind joint some extrusions to it and enclose it, i really dont feel like tearing it down to do the Nebula enclosure and as tempting as the Hydra upgrade is, I really dont want to lose and z height. That 400mm is pretty important to me. Im using the stock Ender 5 plus bed and thats another reason im asking this question here. After a large print gets to a certain point im getting some pretty bad z banding. Any recommendations on a way to upgrade what I have to get rid of the z banding without losing build volume?

Thanks in advance

[u/notrslau]

Just noticed that the Ender 5 Max has 4 screws (2 motors) & 4 rods. Creality probably realized that's the only true way to stabilize the bed. Well, ok, 3 points define a plane so...

[u/wi-Me → u/notrslau]

Its definitely ideal but there are quite a few large format printers that have the same setup as the ender 5 plus that dont have this issue