Digital BW, The Print

I have a new 2200, and am getting very nice BO prints using the 
methodology detailed by Clayton Jones.  I've been using the Epson 
ink set, but have ordered Eboni Black.  I hope that improves the 
slightly "non-black" look I'm now getting.  I'm having one really 
frustrating problem -- the borders are uneven. Always.  I've tried 
everything I can think of, including searching various forums for an 
answer.  I know this isn't a really exciting topic, but I hope 
someone can give me some help on it.

I'm printing from within Photoshop 6.0 on a PC.  I want to print an 
image on 5x7 paper with .25 inch borders all around.  My image in 
Photoshop is cropped to 4.5x6.5 inches.  My printer settings are 
landscape, 5x7 paper size, centered, Epson Enhanced Matte, 2800 dpi, 
black only.  The print preview shows a centered image with wider 
borders on the sides.  The actual print has .25 inch borders on top 
and bottom, and .5 borders on the ends.  The image is compressed (or 
clipped) to less than 6.5 inches.

Any help on this will be greatly appreciated.  Thanks.

Dick Smith