If you want higher contrast with Pyrocat-HD, try the bleach-redevlop trick using a rehalogenating bleach like that you would use for the bleach-redevelopment sepia toning. Redevelop to completion in Pyrocat or PMK. The result is increased stain image and thus increase in contrast for printing on the blue-UV sensitive materials as well as graded silver paper.
This works even if you could not get higher contrast by direct development. Try it on a test neg if you don't believe me, or even if you do.