I fashioned a tongue insert from a Home Depot wooden paint stir stick. Took a little carving but the thickness was perfect and its still working almost a year later. Here's my previous post http://www.peachparts.com/shopforum/showthread.php?t=169369&highlight=stir+stick

Btw, this is on my front driver door on my daily driver...lots of use and still working Knock on wood