It will be better to have a tech to look at your printer. It is possible to have a dirty MOB sensor, or a defective Laser Module, ot to do a NVM initialization. But first try to swap the drums between them and do a well cleaning of Laser windows with the cleaning rod.
There are some scenarios for this issue:
- A software conflict between margin calibration and RegiCon was causin a color plane shift
- SRA3 margin alignment was incorrect. A new driver is required for SRA3 margin update to function correctly
- A defective Configuration Card.