I have been using Mark Poole's Nav Light effects for awhile, but have always noticed this. If you are behind the a/c and there is a white nav light centered on the tail cone, it will always cast illumination to the left side of the tail. (right side is ok) Same goes for the red nav light. It tends to illuminate the wingtip with a white cast, which also shows up during the day, depending on the color of the a/c. The green appears alright, but if logic dicates, it is also probably casting a illuminating effect, but would be inside of the wing, and not visible. So basicly, they are great effects (better than standard), but seem to give off an illuminating effect to one side.The textures for these look ok. Opening up the fx file, there are 4 pages of properties. Can any of these cause what I am trying to explain? IS there someplace to get info on what these parameters are and what they do?Rick

This is likely an artifact of the postion of the light, on one side or the other (not precisely in the middle).You can get info on .fx files in the SDK. Search for links.