No problem, itís a pleasure to help.
Here you have the new pages you have posted above using the technique I explain above - 8 pages, 289 Kbytes in size. See if how it looks in your DX.
Concerning the grey scanning.
It should be used if your result file is to be a text file, a word file, or a text and images pdf file; you want the most perfect results for the recognised text, and the original is old, like burned by the sun pages, the size of the font is less then 10 points, or the original text is less then 300 dpi's printed (like fax text).
For normal books, black and white printed, new (or relative) and good printed fonts (10 points or above), b&w 300 dpiís is perfect, even for the output I point above.
Let me know if you think I can be of some more help.