Should I pursue legal action against the bulder of my house.

I purchased a new home from a builder and they have been in my house on a few occasions to work on issues. One of the main issues I am running into was noted during the pre-drywall walk through. I noted that there are several spots in the floor which were extremely uneven. They did not correct these issues and then tried to correct them after moving in. Finally after a year they corrected one area but still have not the other. In addition the wood floor began creaking almost immediately after move in. I have been in neighbors houses and they do not exhibit the same issues as mine. Given they too have experienced multiple issues and have basically given up fighting the builder. Which I am assuming the builder will hope I do as well. The "Home Care Manager" frequently does not show up or follow through and I am often stuck at the house playing project manager. He stated the wood floors were probably nailed when those particular ones should've been glued and is stated in the manufacturer's information as well. I saw that they were nailed when they replaced on pieced that was cracked due to the repair to one area near the stairs with an extreme deviation. I am not even sure if the fix is even done correctly. I did have a home inspector come out the house and provided the builder the report.