Does the MD 11 have a built in gross weight/CG calculator on board, independant of crew input? If it doesn't, it is impossible to xcheck weights. That is the old problem with cargo ops.
Livestock flights are/were the worst. The handlers used to dictate that the lightest animal be weighed x by so many head cattle, horses or whatever, then they would throw water, etc., feed that wasn't weighed! So before you took off you knew you were going to be "heavy" sometimes very heavy. Talking 30 years ago.
Pax flights it is easy of course to xcheck weights. Unless the a/c has the stand? system, cargo can and still is it seems, be an "inexact science."