Thin lines between textures

Hello everyone,

can anyone explain me, how i get rid of these thin lines between the textures? Each texture is on a quad.
I tried to scale the quads (+/-), without success.

On watching a bit more closely on the lines, i noticed it could be that the top and bottom pixel row and the left and right pixel column could be mirrored.

Found the solution:

The images wrap mode was “repeat” but has to be “clamp”. i changed it on all images and now there are no more lines.