I planted grass around the beginning of sept. It was a new plant from scratch. The slicer/seeder I rented did not work properly. It did not lay seed the way it was supposed to. I have rows of reasonably thick grass and rows of thin grass. My local nursery told me to rake and place seed in the rows that are more thin. Will it work if I go through with the seeder and put seed down or is the raking aspect necessary? I have no problem watering as much as necessary, I just don't understand how the raking is all that necessary. I question this because I was told when you overseed you aerate and then seed.. But the aerators appear to more-so poke holes in the ground vs digging it up. And very small amounts of seed would obviously land in those holes. So you would either be wasting a lot of seed or the holes are only somewhat beneficial. Please advise.