Another day, same ol' same ol'. I've just been over the machine again, checking all the contacts and wiring on the score-motor, start, and re-set relays. Checked the score-reels again, although these are seemingly working fine. I did find one small thing. The replay button would not activate the machine, but the coin chute contacts did. In the book it says that this is caused by an 'open' tilt switch in the front door or in the machine somewhere. All the tilt contacts and wiring seems to be ok, so I have no idea why this would be doing this either.
Does anyone know a good pinnie mechanic on the NSW Central Coast? Don't think I'll have much success with this by myself. Thanks for all the suggestions, much appreciated.