I redesigned the stand and raised the height of the guards to 25 mm. The rest is completely unchanged.
After putting all parts together with some superglue, it now works perfectly.
Print Settings
Printer Brand:
Creality
Printer:
Ender 3
Rafts:
No
Supports:
No
Resolution:
0.2
Infill:
20%
Credits:
DctrBrown