Have you assembled it and are having a problem or just worried about printing it?
The parts are all designed as an "interference" fit. The measurement you are worried about is measured at the tangent of all three bearings. The tangent is one single point on a flat surface, in reality the bearings will sink in bit, and the part will flex and relax. If I did an exact fit the assembly would be extremely loose. This offset has been the same on all parts of all the machines since the second month of the design, about a year and a half now. originally some had more some had less, after the redesign this has no longer been needed.