Another thing...
My wad selection is not the same as yours...
Can you send me copies of your wads please...

Also, is I enquired before... I wondered what your fog and sun colors were???
Have a look at the "Map Properties" dialog under "File" in WED.
You might want to change the colors...
For the "Sun" settings, I suggest white for "Sun" and light grey for 'Ambient"
Then when you set the Material properties of models in MED things will look the way you want them to look...