Can someone post a photo of your Lower Ball Pop switch under the play field?I wanted to see how many attachment points it's got for soldering and how the diode is attached. I'm having issues with mine and only see two blades but my upper pop has 3 attachments points not two.

Thanks this confirmed my switch is missing a solider tab! Thanks now I know what I need to order.

No my issue is that the switch is stuck on when in diagnostics mode. Looks like one of the soldiering lugs broke off and a previous tech tried to hack a fix and failed.

Is the upper flipper the same size as the bottom 2? I need to replace mine. Based on the book's notes on the upper left it looks like it's a 2" flipper with a "2 inch mini-flipper bat with 4-1/16 inch long shaft. according that what marcos pulls up?

Looking at my machine it looks like it's all the same size flippers in mine.

So I think my motor might have a bad spot and it looks like a previous owner tried to remove it because the set screws that holds the weights on the shaft has a broken part in it. I've tired to removed it..and there just is not enough there to grab. I bought a motor that should work if I could extract the old one from from the housing but also the noticed the screws holding the motor in are rounded so they too will need to be extracted. My motor works but some of the time when it stops in one spot it doesn't want to start again unless I help it with a screw driver to get spinning see the video: (I'm also having an problem with the motor being stuck on and looks like the aux power board is putting out 40V instead of 25v on it's circuit. But here is the video and you can see how it's getting stuck.

I replaced brushes already it didn't help the video is with the new brushes in it. I know if the video there are more than the motor issues going on here... the motor is stuck on and also as mentioned there is the issue with the over voltage of the Red and White wire attachment points at the Aux Power board.

At some point I'm thinking maybe I can just buy a new shaker motor assembly like this. My issue with using my replacement motor is the whole extraction from the housing:
https://www.pinballlife.com/shaker-motor-kit-rev-b-for-most-stern-sam-system-games.html

If it's the same drive voltage/amps would this work as a replacement to the the original just adapt it to use the same High Current driver board? Basically looking to order this kit just for the motor and housing...has anyone done this? I don't know the specs of that motor but I might contact Pinball life to see. Does anyone know what the original Johnson motor is running at I think it's 12 V DC but not sure what the amp draw is.

http://www.planetarypinball.com/mm5/merchant.mvc?Screen=PROD&Product_Code=BK-535-6711&Category_Code=MOP

http://www.planetarypinball.com/mm5/merchant.mvc?Screen=PROD&Product_Code=MO-14-7951&Category_Code=GS-753

you would have to fabricate the weights

I've been trying ask Marcos to make the parts for the fault however they said there isn't enough interest. It sure would be nice if we could get some of these parts. They did make the shaft with the flat disc but my fault lever that goes of to the moving plate is worn. I saw someone welded it and recut a slit in it. I might try that.