I have been working for a couple of months on resurrecting from the dead a Bally Goldball.

During game play this happens:
* 30p & 60p are intermittently awarded during game play without any targets hit, especially when right flipper is activated.
(i believe it is due to vibrations and the issue is with the right slingshot. However nothing is touching (or close to touching)
in regards to leaf switches and other mechs below the playfield in that area.

* At times some of the controlled lamps in the back box intermittently lights up for a brief moment (ie TILT), It might be coherent
to when solenoids ( some times) is activated

* Midst game play the game restarts

* Midst game play the game add additional credits/players

What is going on here??!

Oh, and should the displays for Player 2 through 4 be unlit during a 1player game?
Whats is t hat all about?

See YouTube video

Any qualified suggestions is highly appreciated.

Cheers!
/mima