Hot water supply and return pipes running from basement to second floor through the wall is very noisy. I am aware of the reason for the expansion of the copper pipe. As the pipe travels through the top and bottom plate studs in the wall, it is very noisy. What is the proper method of installing the copper pipe through the top and bottom plate studs. Should the holes be drilled much larger than the pipe itself? Is there some time of rubber piece to put around pipe through the stud. Please help, the noise is killing me!!!