For Version 12.1.2+

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On Standard > Weight & Balance > Tanks Tab 

• You can now enter the fuel tank moment arm in three dimensions for both full and empty tanks. Previously, only the Z coordinate could change with weight, now the location (mass centroid) can change in all three dimensions.

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On Standard > Engine Specs > Locations 

• Jet engines can now specify the direction of the compressor spin (clockwise or counter-clockwise). With the fans getting bigger and bigger with each new engine generation, the torque effect becomes noticeable.