I made a remix of the project, i fixed the issue. The support can't keep the ajustable position. I changed the system and added a nut.
I also made a bigger hole than the original to pass the cable by the rear.
You need :

• 2 hexagonal head screw M4*30
• 2 nuts M4
  For the support, i just add a support under the new hole and the left and right corner.

Anycubic

Kobra

No

Yes

0.2

15