Another quick fix that you can try inside of SketchUp is to just make a new texture that doesn’t have that ‘seam’ at the edge.
Here’s the original texture again with the seam noted by the square when applied to a larger surface:
Then, I just drew two lines on either side centered on the yellow bands of the original imported texture. This will allow me to now ‘crop’ out the bad part of the texture. Then I right-clicked and chose ‘make unique texture’ to create a nice new texture.
Here it is again with the new ‘unique texture’ applied to a bigger surface and viola! No seam.
