I'm just trying to replace all the cheesy crosses in CFS3 with the correct Swastikas.  I've already corrected the flags, now I'm going after the aircraft.  I have DXTBmp and Microsoft's Imagetool(via the aircraft/vehicle SDK).  However, I'm concerned about image integrity.  I remember during my fumbling attempts at CFS2 skinning, DXTBmp would degrade the texture quality once you tried to convert your edited skin back to it compressed format.  Is there a way to avoid this entirely for CFS3?