There are a few things to consider. First is the negative. If this is a consistent problem for you, you might want to change something there.
When printing through this kind of issue, you might want to try basing your filter grade on the midtone contrast, and then make local adjustments to the shadows and highlights to control them. It seems like you are doing the reverse.
So for example, you could find a higher grade that gives you the right midtones. To control shadows, you could dodge them, or dodge them more and burn them in at a lower grade. For the highlights you could burn them in at the higher grade or burn them in at a lower grade.