The first is the scaling issue as pointed out by meientau. That is quite clear.
The second is that x and y tilt axes are swapped. I did not check where that originates from. If opening "File->Input devices..." and from there the "hardware" tab, looks like the axis are listed in the order
Looks like there are two issues.
The first is the scaling issue as pointed out by meientau. That is quite clear.
The second is that x and y tilt axes are swapped. I did not check where that originates from. If opening "File->Input devices..." and from there the "hardware" tab, looks like the axis are listed in the order
axis 1: x-coord
axis 2: y-coord
axis 3: pressure
axis 4: y-tilt <--!!!
axis 5: x-tilt <- !!!
Anyways, the attached minimal fix below (thanks meientau) works for me.