Just wondering if anyone has ever replaced the flipper mechs in the old Pre-1975 Bally EMs with something from a new/better designed machine. I'm working on a Twin Win that needs all four flippers rebuilt and it is going to be expensive. I really don't like the old style Bally EM mechs with the nylon ring around them and the roll pins, etc. The last time I rebuilt some of these was in Bon Voyage and they cost an arm and a leg and didn't have much power even when done. Anyone install Gottlieb flippers from the same era? How about WPC flippers?