I was doing blink docking using AutoDock Vina. All the parameters are same, ligand and receptor also the same, just that the grid box center is a little bit different (I did at different time frame, so I set the grid box twice with autodock tools). By principle, isnt it both the results should be the same, since the grid box have covered the whole receptor. Can any one explain why I get different results? And which one should I take?