Ender 3 V3 SE Tolerance problem

Hello Friends,
I bought an Ender and printed the Standard 20mm calibration Cube which came Out just fine. I the printed one of these round calibration Test and the only Thing that came loose was 1mm in tolerance a few others with force and the Rest didnt move at all. I checked E steps who are fine. I tried tightening the X Axis belt but nothing changed. Im really really lost here because I think apart from that the printer ist fine and really cool. Please help