First, if you dont have a DANDR book I highly recommend hunting down a used copy.

In one edition the increase in carbs is by adding another 5 carb serving a few times a week and see how your body deals with the extra. Then add another 5 carb serving and again see what the scale tells you.

ANd continue until you find the carb count where you are not loosing but not gaining either.

One book has a long list of allowable foods in 5 carb increments, but not all. I will see if the one I have has the list.