Inspect how the spacer actually sits before pickup. Looking at the tray from a standing position isn't checking its reference, and a crooked final grip doesn't identify when the angle appeared.
I'd have maintenance compare those pockets with the intended tray condition and retain the point history, so the person restoring presentation also knows which compensations have accumulated.
Compare a known spacer in both rows too. Otherwise different parts and different pockets can travel together through the check, leaving you with another convincing-looking coincidence.
Useful finding, Ben. Thank you for separating the before-pickup observation from the finished grip; that gives the maintainer something definite to restore, though the accumulated taught changes still need their own review.
Keep that check assigned to a named person and leave production status unchanged until it is completed; a delivered tray can otherwise become a completed repair in the planning sheet.
And don't bin the damaged inserts before their condition is recorded. You want the next complaint compared with a known failure, not with everybody's memory of a crooked block.