Here are my thoughts:
Every once in a while, I will have a ball exit the pop bumpers to the left and go SDTM, but it is rare. I think trying different pitches may be the thing here.
The only time it should auto plunge is on a ball save or if the game thinks the ball should not be in the shooter lane. I think you have switch issue.
I think you're actually referring to the garage. There are three opto switches in that area. I think at least one of them is operating improperly.
This is another clue to a switch issue.
Here's what I would do:
1. Remove glass; put game into switch test; bang on playfield to see if any switch(es) triggers. If so, I would make note of the switch(es) and check them. I would bet they're optos. Check to see if they are secure (not loose). Then clean them. I use a cotton swab dipped in glass cleaner or alcohol.
2. While still in switch test, roll a ball over every switch in the game to make sure they trigger. I bet you'll find an issue with the garage lock optos.
I thought I had an issue with the right ramp opto. I couldn't figure out what was wrong. Sometimes it would register; sometimes it wouldn't. Once I thought I had it figured out, then it quit working again. I finally cleaned them and they started working perfectly.
They will not be easy to get to, but cleaning the optos is your best bet.
Quoted from JohnnyPinball007:If you are in my area, and you think you can easily fix this game, I will gladly give you $100.00 if you can get this game to work correctly.
If I were any where close to you, I would be glad to try to help (and not take any money).
Hopefully your problems are just dirty optos.
Good luck!