Boy this thread has gone on for years. I've had a lot of pins over the years but never a Big Guns. Just bought one and picking it up Saturday. Early game #56 that's still system 11A. Non Mylar with a beautiful playfield. Cabinet is near prefect too. Game had to spent it's entire life in a non smoking environment as the boards also look like new still. That head looks to be the same size as a Banzai Run I once owned? Can't wait to tear into it and make it look as good as new again. Playfield strip, clean and wax, cabinet vac and clean, wax. Not a big fan of LED's but think I'll do the inserts with them. Maybe the head as well. Anyone have a spare flyer? I have quite a few for a possible trade?

You can get better results than powder coat by just spraying it yourself. I prefer the Rust-oleum black lacquer. Those system 11 apron decals are really nice if you want an original look and very easy to apply.

Post a closeup picture of the wiring on it. I want to see how you have it wired up

On the lower left. Are there 2 diodes on the coil? Can't see them. Also move the capacitor off of the coil. It's just going to break off there from vibration. Zip tie it to the contact mount and run a wire to each side of the contacts closest to the coil. The direction of the capacitor doesn't matter. The blue with the brown stripe goes on the outer lug with a blue. The other blue goes on the center lug. They go to either side of the inner contact set. The capacitor goes to each of those wires then at the contacts. The upper left is wired correctly at the coil. The blue wires go to either side of the conrtacts closest to the coil with the capacitor attached there also. Make sure that all of the diodes on the coils are still attached and not broken off.

You have to pull a leg off to check them.

What about the shooter lane switch? Does it do a ball search before it launches? Roll a ball over that switch. Don't use your finger as that will give you false results.

??? Don't understand your reply? You want the ball to register the switch closing.

Here's what has broken off of the flipper switches. Put them back on and it should fix your problems. They are 500 volts so these are probably not going to work but it shows you what they look like. You will need 4 of them. If the pin parts suppliers don't have them you can get them from Mouser or Digi Key https://www.pinballlife.com/radial-varistor-14mm.html?Category_Code=

Yep you are right and 500V is the correct one. My mistake it was early.

I get occasional 2 ball muiltiball also during game play. It will fire a ball out of one of the catapults even though you already have a ball in play. I replaced both catapult and saucer switches along with new diodes. All the other switches have their wires attached as new. Could it be a failing diode somewhere upstream in the chain?

What version ROMs are you running?