There are tutorials at UVMapper.com. Use the original geometries in the Geometries folder. You have to save the new OBJ. Make sure to back up the originals in some way before you start. You will have to point your Cr2 to the new OBJ, or if you rename the original and save the new OBJ with the original name, you will have to delete the Geometries file RSR. If you remap, the old maps won't work on any part that you move or resize.