I've got a Stern Stingray that is mechanically/eclecrtonically working.
It has a some playfield planking unfortunately and some paint lifting on the right lower side but my questions are these:

1. Are there any Custom Instruction cards anywhere for this pin? Can't seem to find any.

2. Seems like the playfield slope is to low. I measured the Y: slope as 4 degrees and X: 0 degrees when laying the phone app directly on playfield.
I have (4) 28.5" flat chrome legs which I believe are standard on this pin and the 3" leg levelers which are all the way down in the front and all the way up in the rear.
What is the recommended playfield slope for this older pin? Seems much too slow as it is now and sometimes hangs on the right inner outlane angled corner. Same on the left inner outlane angled corner. Have the tilt off so not to spoil the fun....

Pretty accurate..I use it all the time to check angles, esp Houdini which needs to be right at 6.5 degress.
The app is called Bubble Level on the Google Playstore.

I worked on the 5 rollovers on the upper right the other day. They all needed tightening up under the playfield and all the switch stacks were loose so aligned and tightened all 5.

The only place it gets stuck now is the lower right inlane where the two wireforms meet. The vertical one is leaning to the right ever so slightly. Not sure if that's the way it was originally or over time it bent some but will try to make that wire form perpendicular to playfield and see.

The tilt bob appears to be perfectly centered in the ring. I just raised it very high to avoid tilts during ball hangs.

Thanks!
I was looking for a pair of color custom cards to "dress up" the game some but haven't found any.