(2019-03-07, 18:47)Philippe Hurbain Wrote: My bet is that 6540b is slighly off. (6540a is the same). Distance in z direction between towball and pinhole is 22 ldu, I guess it should be 20ldu.
I came to the same conclusion. Something is off by 2 ldu. It could be either the pin/axle hole or the towballs.