Whiterun stone wall texture gap, how to fix this?

[ciathyza]

I'm creating new textures but for the Whiterun wrstonebase01 and wrstonebase02 and I'm encountering this issue. There is a gap between these two textures as in the below image:

 

http://files.ciathyza.com/wl/?id=fzNyBDmvJkCHRokCBmoWywoO3FzLCf3H

 

I've created the exact same texture set (incl. parallax map only for the lower texture). The gap appears no matter what I do.

 

E.g. I load the vanilla mesh and textures of WR breezehome base into NIFscope: it looks correct.

Then I load my textures into NIFscope: the gap appears.

 

There is no gap on my texture images though. They are exactly the same format and dimensions as the vanilla textures.

 

I saw this issue occurring with a few other texture packs. And some other texture packs yet again don't have the gap issue (Tamriel Reloaded for example). But I can't figure out what causes the gap. It seems to be on the lower texture only (you can see when selecting the lower mesh in NIFscope).

 

Any ideas what causes this?

[ciathyza]

NVM. Fixed the issue. It was a problem of the UV maps in WR terrain meshes not properly mapping my textures because my texture has the grass reach over the ledge.