Sounds like these were made with a chopper gun which produces thicker areas and less consistancy. So no two would be exactly alike. Small parts like this really should be laid up by hand. Hand lay up would have produced thinner but stronger skirts which may have allowed for reproducing all the stock attachents. A good set of these skirts could be used to splash a mold to make some hand layed glass skirts. I really hope you guys are able to get everything resolved to everyone's satisfaction.