The Pinball Resource reference chart for legs lists single player Bally games for the 1962-1968 years, but not multi-player games for those years. Supposedly, these single player games used 31" legs. Looking at the promo photo on IPDB, it kind of looks like the legs on the Capersville machine were 31". Most of the mid-60s multi-player Ballys I have played in arcades and at shows have had 28 1/2" legs...