Resolution of 0.9 degree rotation

The bearing, a R4 type, has no specification of tolerance of the shaft being off-axis.

An attempt was made to re-seat the press-fit R4 bearing in the hinge, gently tapping on the bearing body edge with a hammer. The bearing was press fit slightly off the plane of the hinge, the removal of this could have eliminated the 0.9 degree error. However, the bearing was both very positively press-fit into the hole, but also sealed with some sort of Loctite product, most probably.

Finally the decision was made to elongate the AN3 bolt holes very slightly to allow the hinge to be rotated back to the vertical. Discussions confirmed the acceptability of this approach, in this instance.