Hi jayrc
There are no voids as such with CLOD as the aircraft lines,Rivets and Internals are Hardcoded and added over the skin in Game.
You can still Create your own Skins using the Blank Skins Supplied but cannot edit Lines etc.
Which is actually Better as you dont have to "Remove White" and Use "Bright" as you did in il2 1946 I find it more user Friendly.
Saying that however there is one teething problem,I have just completed a Spitfire skinpack[
http://forum.1cpublishing.eu/showthread.php?t=26421] and
the Hardcoded Lines are Weathered by Default rather than clean and allowing me
to weather manually in game.
Here is an Excellent You Tube tutorial by BullyBoii1234 showing how to add skins to CLOD.
Hope this Helps
Keith