Quoted from Mathazar:Can someone tell me what the purpose of the nails are that are in the slingshot areas of some early Bally's (like the Mata Hari I put a hardtop in)? Is it just for support of the sling plastic piece or is there some sort of other functionality that it's suppose to provide? The hardtop holes don't align with where the nails were on the playfield originally. I'm thinking of just not putting the nails back in.[quoted image]
They act as a anti-ball wedge, as well as keeping the plastic piece from sagging on top of the kicker head.