head zoo keeper,
Thanks for your comments and suggestions, but I'll just have to continue to use my current scanner. I'll concentrate on improving my work flow technique.
P.C. Headland,
Thanks for your email, the tip
not to use auto exposure, which corrected my problem of clipping ends of the histogram curve. And thanks for sending your improved scan working with a low res jpeg.
I've followed your advice and made a higher res scan, which I think is a big improvement. Let's see if others agree that the version below is better.
