Have we ever discussed the S Kuplix replacement for the LGB loop ? Train-Li sells them (10 for $21.50 I think,) designed for close coupling LGB coaches, etc.
https://www.trainli.com/improvement-kits-273/mds-21001-p-5372
I have a bunch of the small LGB wagons on the rounded steel frame, and the loops are very obvious and unsightly. So I got some and fitted one:
Definitely much smaller than the original, so I will probably fit some more.