Bread-Bakers v106.n002.8

I have a question.  How can I get my pizza dough to be crunchier?  My 
current recipe is a short dough.  5.5 cups of flour - half cup yellow 
cornmeal - 2 packets instant yeast - 4 tbls. Olive oil - half cup 
vegatable oil.  It makes a very nice crust for chicago style deep 
dish. I often wondered if adding a couple of tlbs. of vegatable 
shortening or butter wuld make a difference. I'm trying to get 
something close to Duos Pizzeria in Chicago.

Thanks for the help

Mark
Chicago