Range report: Yesterday bore sighted then shot until the last fired was a 3 shot group inside 1 inch at 100 yards. The elevation/windage was dead on the money. So no doubt that this was the cure. In a nutshell, I'd removed the elevation dial and advanced it so that it fell on the right side of a hidden stop beneath it. This allowed the necessary elevation correction to get to zero, that wasn't previously available. I'm sure this isn't an isolated example, when just one little screw stands in the way of the curious who know not what they are doing :-)
