Checked the bottom of the tender board, near the heat sink, in a corner are 4 holes, where the jumper connector would be. There NEVER was a jumper connector installed on that board. My guess is that the locomotive was never run in DCS. Awaiting to hear from the owner.
I double checked the jumper location with MTH photos of the board bottom. Next to the 4 holes is the word "Track"next to the heat sink.