Well as you can tell by the pictures i took a few "plugs" out of the grass to examine the soil and i didnt see any grubs, all i seen was earth worms, at least one from each plug. which is a good thing, right?
it was all st augustine except i tried to fill in some of the gaps with a few different types of grass, like bermuda & fescues but i put them in the wrong areas ( i put the bermuda in the shade..)
anyhow i am about to read them sites, thanks for the replies!!