That same setup on a Claas it likes to average lateral reading 55 ish (0 to 100 scale) so also slight lean to the right.
I donít know why, I just live with it, not functionally significant.
0.6 degrees just bothers me, but over 1 is so far off that I have to adjust it every few seconds. That doesn't work for me. My cousin suggested that it could be the tilt cylinder. The right side certainly is heavier with the right transport wheels.