Can anyone help me with this alignment issues with this printer. If you calibrate the printer a few times its fine for about a week and then it get out of alignment again only for magenta. HP said to replace toner also update firmware , reset to factory settings and lastly to replace transfer belt. I have done everything except change belt. Before i change belt does anyone have any ideas as to what this could be. The printer has done about 30k. This seems to be a common fault ?