I'd look carefully at the Z1 and Z2 relays. There's a switch on each that's normally closed, but should open during the reset sequence when each relay is energized. I can't post a pic of the schematic in that area, but the wire colors on the Z1 switch are OR-WH-RED and BL-WH-RED. The wire colors on the pertinent Z2 relay switch are OR-WH-RED and BR-WH-RED. If those switches aren't opening when the relays are energized, I think they would just bypass the score reel switches and allow the rest to continue.
Do those relays energize at all during the reset?