Digital BW, The Print

First, a question:  Do I need to do anything when switching from a thinner =
paper 
(Epson Enhanced
Matte) to a thicker paper (Photo Rag 308)?  Do I need to do a head alignmen=
t?

As far as the Photo Rag vs EEM, I'm seeing blacker blacks and more shadow d=
etail 
with the Epson Enhanced Matte paper that I am with the Photo Rag... i thoug=
ht it was 
supposed to be the other way around!  I made adjustments to my print curves=
 to get 
the prints on each paper as close as possible.  No matter what I'm doing, 1=
00% black 
is blacker on the EEM.

The photo rag is also a lot warmer, which I like, but I much prefer the bla=
cks and 
shadow detail on the EEM.  Any opinions on what the best paper is for the d=
eepest 
blacks and good shadow detail.

I'm using an Epson 2200 with IP, printing w/ the grey profiles.

Jeff