As said sooooo many times before,,,welcome to the world of repro parts. It seems theres always "something" wrong with them.
When it says "fits just like original" in the catalog,that means,,,you hafta be a machinist,,sheet metal worker,,carpenter,,and all around wizard to make it fit. What theyre selling are "cores",,,,something rebuildable to be used again.
Ive been going thru it since 1973.......it hasnt changed.
Marty