Skybox problem, it's like cubed, clamp not working

Hello everyone, I got problems with creating skybox. I downloaded some textures to create skybox in Unity3D. I created a material, make it RenderFX>Skybox. Then I made all the textures to clamp. And I added those 6 textures to material. Render Settings and I dropped material to the skybox place. But it’s still like it’s not clamped, it’s like cubed. But only the up and down textures are like that, here’s a pic :

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I tried this with several textures but the same, I can only use Unity’s skyboxes, so what can be the problem ? Thanks :slight_smile:

Looks like the Top image should be rotated or flipped. My guess is these were not created specifically for Unity. Other engines have different conventions for skybox texture orientation.