Depends on the stand , at LHR T3 , 313 is a real pain as BAA keep moving the stop marks for different types of A/C , and is a departures only gate , but if you keep aiming for 6 inches off the right hand edge of No 2 door left ( 747 ) you should be ok , as for the 380 stands in T3 , major cock up by BAA , as they are TRYING to add a third jetty but have obviuosly got their calculations right , bang there goes another one !!!!