LO numbers
Stark201
031.02.01.02.03 = calculate mass of component when given other components. Eg.What's the useful load given MTOM is x and Fuel is y etc.
031.04.03.03.01 = calculate deviations from standard configuration. Eg. If crew/equipment change weight/position what difference does it make.
031.05.03.02.02 = calculate new loading position (CoG) when additional load/ballast is added.
Trust this helps.