calibration confusion

Well i try to make a cable Container with some rotating parts but i have some issues that the parts Always fuze together.
I did try temp Towers
Also retraction Towers and Stuff Like this and the result for the calibration cubes are also OK but with a hole because the lead screw could Take some cleaning (atleast i think so)

But i still get horrible tolerances

The Material is petg
And Speed IS around 200-300 MMS depening of what Type i Print
Fan is 21% on which is Just bearly on (20% IS of and 21% only let one Fan Spin)

Temp is 255 for hot end and 80 for the bed
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