I am unsure who to turn to with our home settling problem. The house is 22 yrs.old and we have lived here for 6 yrs. A couple of months ago we noticed we could no longer use the dead bolt on our back door. Now we have to use a lot of muscle to lift the door when we want to close it. We live in Magna, Utah (Salt Lake County). Who do we call to investigate this problem before it get's worse?