I've always heard if find an ancient pin, snag it, but uhh, this might be too old! Even for three bills, if it worked, I don't think it's my cup of joe.
I asked a friend of mine who would probably be doing the fixing for me if I couldn't get it working, and he thought as I do, that pre-flippers are just not going to be worth that much. Even if it worked, how much fun would it be? How different is this from those Bingo games? No disrespect to those folks - I'm sure there are a few - but about the only thing *I* can think, and this is pretty nefarious, is mount flippers on the sucker and say that this was an example of one of the games the money-hungry operators retrofitted.
Did the sell the "add on flippers" as some sort of a kit? or was that something each guy did themselves? I mean, if the whole idea of flippers are new, then there wouldn't be all the NOS parts like we have access to. I only ever saw a line or two on some web site or other talking about the add on flipper thing anway.