If you kept your layers go back to them and straighten your maps then resave them. If you didn't keep them make a new image map / copy your mod files over top of them on a new layer. / Fix the edge of the one that is messed up. / Then select the orginal maps on your image map and copy merge. This should fix the white line.
Thank you so much. I tried that and it worked. When i was saving my mods, i noticed they were a bit smaller then the orig, and wondered how that was going to effect the game. It worked, so no more lines! Thanks again for you help