centerpiece rubiks cube "all screws"

since i tried the first version of the cube and the center piece was crab and all side cubes broke off... i decided to try v2 

i saw the screws an thought why not screw all 4 center pieces 

print is in progress…
 

edit:
at least on my printer the screws screwed up and i endet drilling a 5mm hole in the top-screw to press fit.

maybe its to sloppy so that sometimes the middle blocks slip out of the cube