QTR-Quadtone RIP

Have NK7 inks on a Epson 7600.
I am attempting to linearize the Hahn Photo Rag profile.
I saved the QTR profile as a different name, used densitometer to get 
accurate readings on 21step chart.
When I save those linearization readings, the subsequent printing of 
21step chart (using "new" profile) has very noticable dots vs nice 
smooth gradients.

I feel I am missing something in this process.

help, please

thank you
becky