So when I picked these up at a toy show a year or so back, they were both near complete, but both were missing the caterpillar treads that go over the wheels and allows them to move.

see epic for what they look like:





Aside from ebay (which I prefer not to use) anyone have any ideas where I might start to look for such? Each is a different size and thickness, but I don't have the first clue where to start looking for such a thing. The only thing I could find with google foo is someone using a 3-D printer to make them, but they were non-functional for display only. Any suggestions of places online or brick and mortar in and around Ohio (or that do mail order) would be appreciated.

-M