Have you checked the interconnect board for bad solder joints?
Are the flashers all working?
Solenoid 03A is for Trap 1 up, but 03C is the flasher on the left side.
Solenoid 04A is for Trap 2 up, but 04C is the flasher on the back panel.
Solenoid 07A is for the Knocker, but 07C is for the flashers on the left ramp.
Please check these flashers and report back.