Left flipper. If I don't press the left flipper it used to bounce to the right flipper and up the right lane, giving you (potentially) two lane lights as it goes up over the lane switch and then back down. But lately it's been bouncing higher, typically hitting the right slingshot. Not sure what changed (temperature? Maybe the machine has moved a little on my unlevel garage floor? Maybe the playfield is seated slightly differently in the cabinet?), but it's still a blast to play...

Is there any play/room to slightly twist it when you loosen the screws holding it to the playfield? Just a tiny rotation should make it land on your flipper... Maybe try constant twisting (towards the flipper) while you tighten the screws - that might be just enough to change the trajectory.