Not totally convinced buuuut, yep, you might be right Geof
I find that when reviewing an image first impressions are not the most important, quite the contrary, I need to look at an image for a while and come back to it a couple of times to let it grow on me, when I do this it seems to massage the percieved anomolies or faults (unless they are really obvious ones) and your image is no exception
Mike