Just had to loosen off my upper flipper on my whitewater and got to thinking, where should it be lined up to, I have seen heaps of images showing both ways so thought I'd throw it up to find out what you guys thought.
In the flyer it shows it should be inline with the ball guide which is where I would normally set up a flipper to, such as this image from IPD:
but my pin used to be set up in line with the metal piece sitting behind the flipper (which looks slightly better) like this:
Here is the original flyer off IPD: