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