DaVinci XYZ Z axis screw top support

I noticed that the z axis screw wiggle some since its hold in place in just two spot , this is a support who eliminate 60 -70% of the wiggle of the screw , after printing must file the insides to accomodate the screw , since I didn't want it too loose I made it slightly tighter , he has a hole for a M4 nut inside

printed at 0,3 solid , 40 minutes print