sensor issue

Hi guys. I am having some "trouble" with the given values of some sensors.

The model is this:

I ran the analisys for r/d=0,005 and the program determined que maximum normal stress at some location (x,y,z) . Then I put a sensor right at that location and I ran a design study for determining the stresses with the variation of r/d

r: fillet radius

d: shaf diameter

The isssue is that the value of the sensor doesn´t match the maximun value given by the program for r/d=0,005.

Can the sensor somehow modify the mesh?

SolidworksSimulation