I designed these very basic alignment blocks in Fusion 360 and printed them on my Prusa 3D printer.
The scroll blade fits into the slot snuggly making it a quick affair to set up a repeatable angle of 0, 2.0 , 2.5, 3.0 and 3.5 degrees left tilt.
They took about an hour each to print and cost about 50 cents in plastic (each).
I will no doubt print more angles as the need arises but this is what I got so far.
I enclosed the STL files if you wanted to print these yourself.
3.0L-2021.stl
3.5L-2021.stl
2.5L-2021.stl
2.0L-2021.stl
0-2021.stl