FR-64s endpoints of the horizontal movement

Hi everybody,
I have two Fidelity Research FR-64s tonearms. They both work perfectly.
I noticed, however, that they have the different endpoints of the horizontal moving.

One of the arms can be placed directly above the TT spindle, just this position is the endpoint of its horizontally
movement.

My other FR-64s can be horizontally moved through the above mentioned endpoint a little bit further (apr. 20 degrees after the reaching the TT spindle).

The same situation by the moving right: the first arm can be horizontally moved just to the rest area, my other Fr-64s can be moved outward after the reaching the rest area a little bit further.
Is with this FR-64s something wrong and the arm must be repaired or serviced?
Thank you for any advice.

Paul