Some of the screws or nails in our wallboard are "puffing out"; that is, there are little raises in the walls. What is the best way to fix these. The house in Portland is about four years old and was constructed from during the winter/spring of 1994. I am bodering about the wall might totally raised  up! You think its just a small problem i can solve without the help of a handyman? or Is it best to have a small deconstuction or Ill just look for a handyman that could make solution for it?