Ok guys, maybe I'm overthinking this. But when I'm leveling a playfield (I have the pin guy app on my phone or a real level), isn't it VERY dependent on my putting the phone or level in exactly the right place on the playfield at just the right vertical? What's the best way? Are the hubs of the flippers always a safe horizontal line?

Ok. Thanks all. So it's not as straightforward as it seems at first pass... Thanks for the advice. I was thinking I'd put a straight edge across the flipper hubs but top of slingshot seems easier. Is that always a horizontal?

Thanks for the discussion guys. This is exactly the kind of info I was looking for. I'll be leveling to true, and tweaking for play. For instance, my Funhouse, when level to the numbers sends a right gangway orbit sdtm unless you hit with the upper left flipper. I can't imagine that's ideal.