At my event last night at least one new switch issue popped up and there are a few others that been stumping me.
First one: At times, when a ball is launched, it will give credit for a right orbit shot. I saw this happen in both a skill shot situation as well as in multiball. When multiball started, it was launching the balls and instantly (as in while they were up top before coming down from the flippers) awarded a right orbit jackpot. After the game I took of the glass and manually flung a ball up there and wasn't really getting anything in switch test out of the ordinary. I also popped the playfield a bunch of times as well as flipped the flippers a lot. When I was hitting the playfield up near the upper right, the right outlane switch was triggering. Odd, but not the source of the free right orbit shots.
Second: Shots that go into the lock are at times registering as saucer hits. It seems, but may not be 100%, that really accurate and fast shots have a better chance of doing this. Dribblers have always registered as locks from what I have observed.
Third: Sometimes the shield will not go back up. Power cycling will tend to fix this, but nothing can be done in game once this happens. When this happens, any shots that go behind the drop will just get popped up from the VUK as if the game doesn't know what to give credit for. The three inserts will be blinking as if none of the shield shots have been hit, but they can't be because it's down. I replaced the two roller switches about a year ago when it first started happening and that didn't seem to fix the issue. Happens about once a night during tournaments and throws a wrench into games since it can't be resolved that I know of without ending the game.