My Star Trek: Mirror Universe has always acted a little weird during shows.
http://pinside.com/pinball/forum/topic/star-trek-mirror-universe-pinball

Specifically; If you start a multiplayer game and start playing aggressively; the machine will simply "autostart" a single player game. I haven't really been able to narrow it down too far.

Originally; I thought it was because the popbumper switches were sticking closed. But now it seems to happen in concern with the drop target bank. I feel like it happens when the bank resets; but only when other switches are closing.

I've thought about replacing the bank reset coil's diode... but that's kinda a shotgun approach.

Anyone have any ideas what to look for?

aggressive play meaning the ball... not the player.
I'll look at the diodes in the matrix to see if I notice anything.