I've seen some drawings with multiple layouts all using the same driver and sheet size where when plotting extents (titleblocks have trim lines at sheet extents e.g. 36"x24") and "Center plot" is checked some titleblocks shipt about .1" up and to the left. Even with all objects (including "empty" text and mtext) except for the trim lines deleted, it still will not center. This layout must be set to plot a window in order to center it on the paper. Anyone else experienced this and if so were you able to correct it?