Tomi why not look at it from a different prospective. Release a current version with that will work with GWX 2.0 with in the limits of the game. Worry about the holes spaying water after. Later while your working on it add patches to improve your original release. Also maybe you might get help from others if they can see what your doing. There are alot of tallented modders here. Some of them could add various way of helping your if they can have access to your work. Or you could start up a beta testing team for your Remodeled VIIC/41 GWX 2.0.
Some times its better to take a break and comeback in a few days with new eyes and a clear mind.
If your having trouble importing exporting you could try this program if your already haven't.
http://www.subsim.com/radioroom/show...=Silent+3ditor
I had some trouble with the GWX XXI sub importing tga which would cause flak turrets to be reversed. This program seams to work very well. It does more than just TGA files take a look.