Mark: Try BWG for them. He's got some used ones, that have some paint chipping, but should be looking better than yours. You could always do a repaint on the shell of yours.

http://www.bwgsurplus.com/catalog/index.php?cPath=27&osCsid=iarg4djlpdabgbso9tu4cn1do1

I do know of one other possible source for them, but it will take a few days to check.

Craig 
KF5JOT