Quoted from PinMonk:
I don't know offhand. Put the game in switch test mode (make sure the coin door interlock switch is pulled out or they won't work) and depress each switch. That will tell you if they work, and also give you the name of which switch is which on the screen.
In your picture the one on the right has a pretty sharp bend in the middle post on the switch. These crappy newer Stern switches are pretty famous for breaking off right at the casing. If that switch at the right doesn't register, or only registers intermittently, I'd look more closely at that.
Ok, I will look into that! What's crazy is that after messing under the playfield and moving stuff, this thing lets me play a few good games, then everything goes bad. on the testing the ramp mode. It used to show me "93" failed but it hasn't failed on test. I am calling Stern again tomorrow. Hope they know what it is. Thanks again!