When I bought my house two years ago I never had much water pressure out of the hot side of the bathtub. If I turned my shower on I would get hot water. This past week I can not get hardly any hot water pressure out of the shower. Do you think if I replace the shower head and the valves in the knobs it will correct my problem? The house will be 60 years old next year so I hope I do not have to replace the pipes. If I do have to replace the pipe can I only replace the parts that are not getting pressure? I am sure because of the age it has galvanized pipe. My house is only 1700 SQ foot and the problem is in the master bath. I do not have a problem anywhere else.