After dealing with three of the four engines, I turned to the fourth one, which sits on a turntable track and is to be moved to the front of a long consist to which other engines have already been coupled. The instructions do not include aligning the turntable with this engine's track, but I knew enough to do that anyway. I then followed all of the instructions for starting this engine, but when the time came to drive ahead the engine would not move. I took a couple of simple F12 screenshots of evident problem causers. The first is a yellow circle with an exclamation point in it that appears in the HUD: The second is what looks like a warning light marked "PCS Indicator": Since neither this scenario's instructions nor the only user manual so far available for TSW2 mentions these two indicators, I'm hoping someone on this forum can tell me what they mean and what has to be done to turn them off. In other words, I need a helping hand to complete "A Helping Hand". Thanks in advance.