Laws vary by state. Some states require a lawyer to assist in several aspects of the home buying process while other states do not, as long as a qualified real estate professional is involved. Even if your state doesn't require one, you may want to hire a lawyer to help with the complex paperwork and legal contracts. A lawyer can review contracts, make you aware of special considerations, and assist you with the closing process. Your real estate agent may be able to recommend a lawyer. If not, shop around. Find out what services are provided for what fee, and whether the attorney is experienced at representing homebuyers.
There’s a solution for dealing with wood screws which have broken off below the surface of the wood. If you don’t want to risk damaging the wood by digging it out, try driving the screw deeper into the wood with a nail set. Then just fill the hole with a wood filler, and drive a new screw next to the broken one.