Hej Rex- Some pics might help ?
I had to research this when the Adji drove over mine, so today I took some pics of what I have;
Am using a type 219 which is effectively the same as a 107, but 1-1/8" pivot and ball end (probably no help)
2070LH For comparison I added an old lever combo that may be a '107LH' ,
107LH7/8 (dunno if these 'links' will work)
and a broken unknown bracket only that looks like it had something screwed to it, that I'm thinking sounds like your description