I bought my Frankie a few years ago, and am just getting around to shopping it. I wouldn't call what I do restoring, its more like re-vitalizing. I tear down the playfield, clean everything up, put in some LEDs, upgrade flippers and that sort of thing, but I don't have the skills to fill in missing paint, etc.
Anyway, I just found out that Frankie's head is supposed to move!!! It never moved on mine, just threw the balls. It wasn't until I started taking the game apart that I found out about the servo motor and such.
Can someone with a functioning monster tell me what the head motion actually does? Does it just randomly rotate or does it respond to gameplay somehow? Does it contribute enough to the game to make it worth trying to fix?