My brother is resurrecting a Buccaneer , we have managed to sort out multiple issues over the phone and have got the machine working correctly for 4 balls or 2 balls on the 3 ball setting. When the LAST BALL is in play the roll over switches score as they should but the weird thing is the right flipper pulses 5 times in conjunction with the score advancing.We have traced it back to switch 1a on the score motor . If you close this switch manually when game is on last ball only it activates the flipper but does not add score. Any ideas?

Thanks DirtFlipper will take your advice and see what we can find

Hey DirtFlipper my brother informs me that the clip holding the wiring loom that runs over the top of the reset was broken. It appears the loom was being dragged over the bank every time the playfield was lifted which had bared some wires which were touching . Fixed the wires and clip now working as it should. Still can't understand why it was only last ball but it's all good now. Thanks for your input. Cheers Paul