Digital BW, The Print

MIS sepia>neutral
Pauls curves
1160

While I can obtain satisfactory results from screen to print using 
EAM and/or Eclipse Satine and no custom profile, I am way off with 
Photorag. How does one adjust curves and/or other setting to work 
successfully with this paper?
I have never/dont know how to adjust the curves ?

Another thing, I'd welcome comments/tips on, is that I can never get 
good contrast on any image on any paper unless I Duplicate the 
Background Layer and set the blend mode to Overlay with about a 50-
80% Opacity ?

thanks
Frank