I'm a Ricoh guy by training, but I've been asked to help a buddy of mine who has a Phaser 7500. The last two cyan drum units he's installed have both suffered the same issue: the cleaning mylar/blade along the left hand side of the drum unit keeps flipping so that excess toner just builds up on the outside of the unit leaving streaks or spots on the page.

It may be a consumable unit, but to have the same issue with two of them? None of the other colours are affected. Firmware is at the latest version.

Thanks in advance.