Hi,
The following is two different versions of KeyShot.
The blue speaker guard belongs to KS7 and the red one which has displacement belongs to KS8.
Looks great but I do see a little stretching around the edges. Did you use planar mapping?
The problem is UV mapping glitches in Nurbs. The filleted area doesn't have a continuous UV in relation to the center area. So, I cannot use UV mapping in KS and the only options is Planar.
I'm not so sure that the stretchy thing would be wrong either, as in manufacturing the screen would be stamped into shape from a flat roll, and in the process the rounded bent edges would most likely be deformed and stretched. IMHO, it gives it a bit of not-perfectness that adds to the realness of the render. I don't dislike it!
The grill looks pretty good displaced too, very nice render!