I just purchased my first NIB, Iron Maiden Pro. Seems to work great aside from one issue. Once I lock say a ball 3, really it's just the one ball locked, then the other 2 balls are supposed to shoot out and get captured with the others. However what usually happens is when ball 2 or 3 gets launched it hits the upper left flipper and doesn't make it up. Unless I hold my left flipper then it will make it up. Has anyone has this issue before? Is something set too high with too much power? Thanks.