two things to consider when loading a MD-F,That model has a 7.5/1.0 ratio of fuel to the tail tank.If,and only if,you close the refueling door and you have not setup pallets in 1A/B positions,the fuel starts to flow into the tail...at the lump sum of 6T......(for each 7.5kg of fuel,it sends 1.0kg to the tail on ground).Most Airorts I operate,have "nose gear"tiedowns,to prevent tail "sitting"...
SOP's warn and predict such occurancies,with steps/actions to follow.Nother workaround,is to tie the tow bar&truck to the nose,having a extra counter wieght,for avoidance...
Regards
"0"G