Ok Red, I got the Extract-Tool and Opened Fubar's .dat file. (the ones that are located in the object folder (turm files) extracted all the textures in it, and put them in the Texture folder....and taadaa it worked like a charm

The ugly stock are gone and my Turm shines fubar-tastic again!
Once more something new learned!
Thanx for the hints!
Myx