Quoted from Bud:
I am in no way insulting your techniques or what you know, but I don't know how you did it, so I'll ask.
I get OCD when it comes to the level. I use a standard bubble level, digital level, and small digital inclinometer. I find putting a straight edge along the top of the slingshots, and then placing the digital level on that works well for gauging the horizontal level. For vertical slant, I will put the digital level between the flippers resting on the centre of the apron, and then the centre of the level is usually around where factories install their bubble levels. I also take the inclinometer, and I put it in a few spots across the middle of the pf to see what reading I get. Somewhere between the slingshots, I like to be at 6.5 degrees.
With IJ, it is obviously more difficult because you have the mini pf to level as well, and it could be off while the main pf is perfect. I'm planning to remove the POA later this week when I have time, and get the the Mode backplate removed while I'm at it. But when I put it all back together, I'd be interested in hearing how I can adjust the level on that.