If you used the K2 grass for Dantooine I think you should know this.
The K2 Dantooine grass is a recoloured and downsized version of the K1 grass with K2's texture being 256x256 whilst the K1 grass is 512x512.
Since you upsized the Dantooine grass to 1024x1024 wouldn't using the K1 grass (with your own recolour) instead look better if you upscaled that instead?