if you don't close the gates, the tanks/cell transfer to each other, dont they?
Snoopy, Where are you?
Busy testing the Hawk for VEAO

. EinsteinEP impersonated me spot on.

Normal operations you have the Tank Gate switch to
CLOSE. If the tank gate switch is left
OPEN, large amounts of fuel will transfer between the forward (right) and aft (left) main tanks and could cause significant center of gravity shifts to occur.