my ramp has seen better days but pretty sure this is what you were looking for

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Yes, I think you are correct with this assumption. The switch hasn't been activated in a while so the game will show an error when booting. Try using a more powerful shooter rod spring or lowering the back legs like you mentioned.

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For the visor chest target bank, I had the same problem. If you search around the internet, you will find this is a very common issue with Pinbot that I don't think will always need the same solution. For me, I had to replace the visor motor. Now when the visor opens, it is nearly even with the play field and the ball has not gotten stuck since. Also, I would check to see if the visor chest target switches have some foam behind them to protect them from breaking. After 30+ years of getting slammed by a pinball the foam will decay. It's a pain in the ass removing the target bank and replacing the foam but it's well worth it in the long run imo.

Funny mine was missing the same one in the same exact place. I scored some on eBay a while back from a parted out Pinbot that being sold as a lot. I believe it was all the wire guides for the game. I'll dig them up later on tonight and see if I have an extra one for you.

Yes, I do indeed have an extra one. Shoot me a PM if you still want it.

Has anyone out there heard of this one? I've had an issue with my Pinbot from the day I've owned it where every now and then the pop bumpers going off will activate the clear lift ramp to raise for no reason. Usually when this happens hitting any other switch in the game will activate the ramp again lowering it back down. I could be wrong but I'm pretty sure this isn't part of the game's rules, any idea how to fix it?

Last night I finally managed to reach the sun and hit the special. I'd never done it before, what an awesome feeling! Rolling over the score seems like a distant dream lol. My top score is 5.6 mil.

Thanks for the help everyone. To clarify, the energy value is not being scored, its just the lift ramp that is behaving badly. I inspected and cleaned the energy target switch for good measure but found nothing suspicious. I also checked for loose connections on the ramp and pops but didn't see anything.

Some more info: the left pop bumper will sometimes stop working and won't react to the ball. I rebuilt the pops a while back but it didn't fix it. The left bumper is in the same switch column as ramp down. I don't see ramp up anywhere on the matrix so I'm assuming it's the same as ramp down? Also, I removed the mini pf today so I could drop a ball into the pops while in game. The lift ramp will still raise up even if the left bumper temporarily stops working.

One more thing, when I power the machine on, the lift ramp will raise up (if it wasn't up already)and stays open. The visor will also open and close. This is normal behavior correct? I've always assumed it was just wanted to confirm.

Ok thanks I'll go through the switch column and check for a short.

I have the cointaker ones. They were a little pricey but work great you will like them.

Congrats on getting the ol 'Bot set up!

https://www.marcospecialties.com/ and https://www.pinballlife.com/ are great for parts. Also, check out http://www.bayareaamusements.com/

You can source new plastics and back glass at https://classicplayfields.com/

Freeplay40 makes some great ramps if you need them. not sure if they're still available but chaskett made a nice lift ramp decal as well.

I also search eBay on occasion as you can find some hard to find game specific parts if you time it right. Hope that helps.

PapaRyanFresh bookmark this page, it is great reference for system 11 games.

https://hansbalk.home.xs4all.nl/rep/sys11/index.html

I am a novice with the electronics side of pinball but it's helped me a lot. With your background, you will probably get a lot more out of it than I did.