the locator helped, then we changed trays

A different physical tray. Same drawing number, which I lazily took to mean same fit. Thanks for making me spell that out.

Did it actually sit against the new locator? I've had trays apparently in place with a lip riding on the stop. Looked fine from where I was standing.

I didn't check before removing it. Annoying answer, but it's the honest one. I can report the missed placement, not claim what caused it.

Photograph the two empty trays beside each other first. Undersides too. Cheap check, and it gives you something less vague than same drawing number if they're visibly different.

That's what caught me on ours, Ada. Rear edge hidden by the next shelf. I was pushing the front and feeling very certain about something I couldn't see.

Naomi, did you change the stop or just make the seating check visible?

Mei, the underside photos showed an extra rib on the second tray. Toolmaker is checking its contact with the locator. Ada, the rear contact is hidden from the loading position, so I've included that in the change request too. My update now says improved on one tray, failed after substitution.

Ada, we changed the stop position. A mirror got suggested but would've been one more thing to clean and knock. Different station from Hana's, so I can't say that's her answer.