Can I call our locator change a fix yet?

Do you mean replacement from the same box, or a newly supplied part? That is a fairly big hole in the story.

Newly supplied. Same drawing number on the bag, but I have not compared the revision letters. I treated the number as enough. Probably too quickly.

Provided you still have one of the good housings, a side-by-side look costs very little. I would start at the bit that caught, not buy another locator because the first one has embarrassed you.

And check the revision letters first.

The new bag says C and the old bag says B. There is a slightly wider lip on C. Our locator contacts a flat further down, so both sit nicely while the lip is in a different place.

That sounds like a tray clearance question now. Has anyone checked whether C is actually meant to go in this tray?

Ada, keep the locator result in your post. You changed something useful for B. Erasing that because C turned up would be just as confusing as calling both versions sorted.

The tray drawing only lists B. I have changed my update to say which housings we tried. Thanks, Sam. I was about to turn the whole post into a warning about the locator.

Did you find out whether C gets a different tray?