I contacted Luke at US Coach about getting king pins for my 1999 Dina. I figured he might have a source to order them from. He called me back an hour or two later and said he said a set of king pins on the shelf. The price was reasonable so I ordered them. Thanks to Luke for having the parts actually on hand.
Local shops said they would likely need to remove the pins, and then find replacement parts. One shop didn't really want to do the work since it would tie up a bay while locating the parts.
Do you have contact info for US Coach?
856-794-3104