The Domectic support comes with a small aluminum palte that can be utilized to spread the pressure out some if center does not land directly on one of the studs. I have yet to put it on yet, wiaiting for warmer weather. You are suppose to place in center, touching the awaining and then raise it 1/4" before screwing it in with the two supplied cap screws. My awning is really not sagging to much but I can see how it could start to sag over time. ths.