Symmetrical Normal on X axis possible ?

BrunoNM

Hi everyone !

I'm actually facing an issue with seams.

Here the frame body is divide in 4 parts in the UV, the part 1 has a mirror of itself.

When working in Painter I noticed that the part 1 is great on one side, but the other side the part 1 mirrored, the seam is really obvious.

I think the problem come from the part 2, its gradiant is different on both sides.

So I would like to know if there is a solution or trick to avoid this issue ?

Hope somebody has a idea ?!