So picked up a big guns that was non-working. Got the game all working except for the dam locks for multi-ball both sides of the playfield. All switches work in test: Cannon switches, lock switches, and the through switches (3). Light is lit on both sides to lock the balls. Diode's are all checking as good. No errors on startup. Play first ball and lock it, it gets moved it over to the cannon and anther ball is released into the shooter lane. 2 seconds later the cannon fires out the ball creating a 2 ball multi-ball. This happens on both sides of the playfield never being about to keep 1 ball locked. Could this be a chip issue?

Actually I did replace both switches in the cannon's. No dice. It's so weird. I will play a game, take the ball out and trigger the lock switch with my finger. It will activate and 2 seconds later fire the coil on the cannon with no ball in the scoop.

It's all mechanical when the diodes are good, and switches work. It's a bitch to take either whole assembly apart. Drunk mf on the line that day. Coil brackets were cocketed a little bit. That's the right cannon bracket. Cannon coil in pic.

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Fixed this issue, catapult assembly disassembled and new switches installed. Also what was key was slightly bending the end of the switch towards the playfield from underneath. It seemed that before bending the switch the switch was so close to either activing the switch or not, giving me 2 ball muiltiball and almost never locking the ball on the left or right.