Sounds like a trip to your local salvage yard(s) is in order. Denver is a good place to still find these (in the salvage yards). Just take the mechanism/handle out of a junk yard van then you'll know how it's supposed to look and how it should be installed. When you put the "new" parts in your van just make sure everything is well lubricated and working correctly. Most of the time just a little lube & TLC is all you need to make old crusty parts function like new (assuming nobody has "fixed" it before). Tim