Just completed more testing. Readings did not change much. Next technician visit will test both DPP44 switches receiver ports 2, 3, and 4.
Following is readings for satellite 118, transponder 1:
Left Duo Node current readings;
Left host: tuner 1-57, tuner 2-56, tuner 3-38
Right host: tuner 1-57, tuner 2-56, tuner 3-56
Installed new Left Duo Node, readings;
Left host: tuner 1-57, tuner 2-57, tuner 3-41
Right host: tuner 1-57, tuner 2-56, tuner 3-56
Installed new left DPP44 switch & power inserter. Right DPP44 switch trunk coax is disconnected, readings;
Left host: tuner 1-55, tuner 2-57, tuner 3-43
Right host: tuner 1-57, tuner 2-57, tuner 3-57
Connected left DPP44 switch trunk coax to right DPP44 switch, readings;
Left Duo Node
Left host: tuner 1-57, tuner 2-57, tuner 3-45
Right host: tuner 1-57, tuner 2-57, tuner 3-57
Right Duo Node
Left host: tuner 1-57, tuner 2-57, tuner 3-37
Right host: tuner 1-58, tuner 2-58, tuner 3-57