As a fellow student, I will give this a shot. wt(arm)=moment, so as currently loaded, 3650 lbs x 94 in= 343,100 in-lb of moment.
You want to change the moment to 3650 lbs x 92 in = 335,800 in-lb of moment, a difference of 7300 in-lb.
The arm of the baggage changes from 180 to 40, a...