G-gnome,
I have a 2A style (also considered an early 3A) passenger fender on my 3A. I don�t remember it interfering with the tray, but it�s been too long since this 3A was together. And the whole thing was a disaster to begin with, so who knows at this point.
When Bob W visited recently, he left me with the impression that there are occasional issues with the 2A fender fitting right against the 3A tray. We looked for a trim job on my 3A tray but couldn�t see any sign of a modification.
Do you have a 2A passenger fender on one of your rides?
Tim