Nah it wont be necessary to shoot it.. not now 

I ended up sorting out the problems i was having with it

The problem i was having was that several of the scoring relays on the bottom board wouldn't latch on when tripped by the PF switches.. there is a set of contacts on each relay to do this, and a switch on one of the score motor switch stacks that breaks the circuit when a particular score sequence is completed. It was the switch on the score motor that was causing all the grief!! (needed adjusting/cleaning).

I ended up finding it using my multimeter on the continuity test function. it was this switch that was stopping a total of six relays from latching that i found by tracing the latch wire from. Each relay has a wire from one side of the coil that goes to one set of switch contacts on the relay.. this is the relay latch contacts that latch the relay on after it is tripped, and the circuit is broken by the switch on the score motor that i traced the wire on the other relay contact to. (hope this makes sense.. i'll include a pic to hopefully help explain what i mean). i just included this little bit of info in case anyone else encounters this kind of problem, and that it might help!!