Hi, Dale!
I've "restored " a few, but they were all my own from when I built them decades ago, and restoration consisted primarily of just painting them! I was a good kid when it came to glue application, so no big problems there. Just filled a few obvious seams, painted the kit, and was happy! Amazingly, they were all intact, as far as I could tell.
Still in my collection, and all repainted, are the following:
The Creature (Classic and MOM)
Godzilla
King Kong
Dracula
Frankenstein (Classic and MOM)
Mr. Hyde (MOM)
Wolfman
The Mummy