Can't find it again, but was looking at something else on 7Zap when this caught my eye on the schematic.
Googled the part number (191 867 710) and sure enough found a few old images... it was a new one on me at least.
(https://irp.cdn-website.com/521a0932/dms3rep/multi/tray4.webp)
(https://irp.cdn-website.com/521a0932/dms3rep/multi/tray3.webp)
(https://irp.cdn-website.com/521a0932/dms3rep/multi/tray2.webp)
(https://irp.cdn-website.com/521a0932/dms3rep/multi/tray.webp)
(https://irp.cdn-website.com/521a0932/dms3rep/multi/tray6.webp)
(https://lirp.cdn-website.com/521a0932/dms3rep/multi/opt/tray8-1920w.jpg)
very very very hard to find, this has cropped up in the past. Possibly on the old forum so I expect that conversation is lost forever now. I think this is even more r-a-r-e than the shelf tray thing - I believe someone has started remanufacruting the shelf tray thing, if you know what part I mean.