all the drum units and dev units have been replaced. and the transfer belt and blade.when i make a full colour copy the machines most times makes a creaking noise (like floor boards) and when it does, the colours are out of position and i get lots of different coloured lines from top to bottom. (not in the direction of the feed). this mainly happens on a3 and sometimes on a4. printing is perfect in b/w with no problems. the white gears on the back of the drum have all been replaced including the stepper motor that drives the gears. ive enclosed a sample
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