More water = adjustment to Grain bill?

My all grain setup, with it's inherent dead spaces and boil/cooling losses, require that I start with 8 gallons of pre-boil water.......instead of the 6.5 gallons many recipes say I should start with.

Should I adjust my grain bill somehow to account for the added water?

I set up a 'dummy' equipment profile to match the recipes in "Brewing Classic Recipes" and BYO as well as other published recipes.  In that profile, I match the efficiency the recipe is designed around and the water volumes which are called for.  I can then enter the recipe as it is published (more often than not, I make some minor adjustments to meet the OG, IBU, and color)and use "scale recipe" to adjust the recipe to the equipment profile that I use for my recipes.  This way, BeerSmith will adjust the grain and hop amounts to match my system.