I have projected 169 images from WA North State Plane to NAD_1983_UTM_Zone_11N. They are *.tif images. I'm using ArcGIS 10.1, sp1. Once I bring them all into ArcMap - I get a thin dashed white line along the edges of the individual tiffs. I orginally used the Nearest Neighbor option, then tried the Cubic & Bilinear resampling options. Each created this white line. How do I get rid of this white line? Please see attached image.