Thanks Mal. The two layers don't seem adjustable; they're just cut. I think what I may do is add one of the blended images as a layer, make its mask black and then brush in the head.When the stich goes wrong for me in the way you describe I do one of three things.
1. I just use the clone tool to tidy up a small area.
2. I go to the mask layers and reduce one layer mask and extend the other layer mask to move the point of contact.
3. I restich the images using either different settings or I use my Kolor Autopano software that has more manual control than CS but which I find is more work than Cs.
Mal
Thanks for the info on the other software.
Bob