Sorry I am kind of new to working on partial mashes. How many lb of extract to lbs of grains for a partial mash? I know there has to a certain equation for the sugars. Thanks...
DeathBrewer's numbers are a good place to start. Remember that they only apply to the base grains (2-row, Pilsner, etc). You don't change the specialty grains.
When I convert an AG recipe, I add up all specialty grains and use at least an equal weight of base grain.