NoTurns,

Reading your post again, something occurred to me.

If your imported textures do not tile correctly, you should check your image. If the image has an irregular edge, has a (white) frame around it, or is partly transparent, that will show in SH3D as an irregularity. Maybe that's why you think your texture doesn't tile correctly.

Use an image editor to modify your image, or search for a new texture. You may try to use these search words: "texture, tileable, tiling, seamless".

Hans