So, if you haven't been watching my frustration with drag cubes in this thread: You're missing all the fun! I realize not everyone is going to be needing to play with drag cubes.  But trust me on this, if you create parts, sooner or later, it's going to catch up to you. Here's a tidbit I learned in my experiments that I haven't read anywhere.  If you add in a DRAG_CUBE to your part.cfg, it will overwrite the PartDatabase.cfg!  It'll even change the entry in the PartDatabase.