I installed a new game over relay with the switch stack adjusted. Started a new game, the machine is set for 3balls.
After the last ball is in the out hole the score motor runs forever and never latches the Q relay.

The game never goes to game over.

If I press the start button a new game begins.

Suggestions

More details.

On last ball with ball in outhole...
The R Hold relay is on and active
The U 1st ball relay is on and active
The BX last ball relay is on and active
The score motor turns on indefinately and the O out hole relay fires but does not kick the ball out the outhole.

The Q relay Never turns on.

I can hit start button and a new game begins.
Have cleaned all the 4C score motor stack switches, also the 1C and 1B score motor score stack switches.

I removed the entire motor and relays board out of the cab, 5 hrs later every switch and motor switch cleaned and adjusted.

Q Relay working.

Solved