SSE Only small part of path have texture show as intended

[DynV]

For the future mod I intend to make I need to have the grass removed and snow looking different (be it showing footprints or partly cleared). I've tried using CK in landscape mode with the texture LGrassSnow01NoGrass, radius 2 & fallof 75%, but only a small part of what I'm looking to have done for my 1st pre-pre-alpha version show properly, the majority of the area I activated the landscape tool over with multiple passes (as the CK also had the majority seemingly unaffected) show as if no mod was installed; the issue seem to co-relate between CK and in-game (there was some hours between the creation and test). Where my PC is walking on Windstad Manor Access Paths - to demolished home SE is where I'd like a path to be made for the mod--very--early beginning, and this is what I have for now.

 

Your help would be appreciated