On score motor cams 5 & 6, the top 2 blades on each switch are the normally closed portions of the make/break switches. These 2 normally closed switches are the shared relay hold circuits release switches. Clean and check for strong switch closure.
On the index cam, the top 2 blades will connect when the switch stack lifts off of a home position.
Clean and check this switch along with the normally closed switches on this switch stack.

A schematic error is at location F8 we’re ball coin step up should read ball count step up. Make correction to your schematic.