The deck is 8 feet 5 inches wide and 23 feet 5 inches long. I just saw the part at the house in the middle or so has dropped about 3 inches give or take. There are no wood going to the ground against the house just the outside and corners,total of 8,3 corners,3 middle,2 for steps. I just put 2 4x4 in the middle or close to it not nailed and it raised it up slightly. I may have 2 more to put in tomorrow but not sure how long it is. Should i put them in the middle or against the house? I will get it looked at as soon as i can but will be awhile. thanks