I combine 3 to 6 smaller 3in tif aerials to create a PRM grid we use. They look great when viewed in ArcvIew, Autocad, Photo Viewer but in GTechnology they are horible with strips. The raw 3in look great in Gtechnology by themselfs but not combined? We had 6in raw tif but those combine work prefectly in Gtechnology so I can confused since there is not much to change.