Ok, nothing on the frame 3-4 switch stack is out of place or looks like it controls the hi low switch stack. When frame 3-4 comes up in a game, that stack coil pulls in, releasing the stack. That must energize something else to go between frame 3 and frame 4. It would have to be whatever energizes that there is probably a second switch that should energize the hi low stack. Im close, just not there yet!