Nightmare of nightmares. So far I have had no luck rasterizing my rivers in ArcGIS. I was about to give up and see if I could get my Illustrator traces(with their issues) into a shapefile(it can be done, it ain't pretty) and then figure out if I could get them scaled properly for my map. Just then I figured out how to make ArcScan work. I may be past a major impasse.