I just acquired a Williams Toledo pin and am just starting to fix it up. I noticed these nails under the slingshot plastics that definitely don't look original. Further, the heads of the nails have worn pinholes in the artwork because they are so tall they rub against the bottom of the plastics. All the plastics on this machine are slightly warped, although none are broken. The most damage is from these nails on the slingshot plastics. If they aren't original, how would I replace them and with what? Thanks for any advice!