We used to have problems closing the cabin freight door of the BAC 1-11. Usually only if it had been left open for any length of time or if somebody had done a fuel uplift while the door was open. The door lock latches would not engage. The only answer was to keep on trying and hope they would engage or start the engine and use the engine driven pump for the extra pressure. I know the BAC 1-11 is not modern but it is the same vintage as the VC 10!