Hi, I'm looking for some advice. Currently I'm learning NTP and how to drive the BR class 45. In one of the scenario's you've to switch cab to change the direction of travel. However after switching cabs, I loose brake pressure in my drivers brake and can only stop using the main loco break. Even after switching back to the original cab, there is still no brake pressure being generated by the drivers break. What am I missing? Is there a step to switching cabs that the tutorial / scenario guide isn't explaining?