Hello! I am putting up a new fence for my in-laws and need to move the top row of sprinkler heads so that they cover the lawn in front of the fence. First, are there any pressure problems with using a pipe run under the fence line to connect the water source? Second, are there any tips for removing the existing tee on the water source line and replacing it with an elbow fitting? I am a newbie and the sprinkler move was an unexpected addition to the project, so advice or tips are greatly apprecia...