Prepar3D Photoscenery blending...

I'm having great difficulty blending my photoscenery in with landclasses in Prepar3D. I'm using the v4 resample.

This is especially the case with global landclasses. I have found the tiles of the area and made my levels about the same. In cloud shadow it looks reasonable, but when the sun shines the photoscenery seems to become much brighter than the surrounding landclass.

I have even made a test in which my photoscenery is very dark compared to the landclass texture, but for some reason after resampling and in the game engine it is still, much brighter in the sun, but appears much darker in the shade.

Is there any special way of avoiding this?