Between March 1926 and September 1928, the CLR converted the remaining gate stock carriages in phases. The end platforms were enclosed to provide additional passenger accommodation and two sliding doors were inserting in each side. The conversions increased capacity and allowed the CLR to remove gatemen from the train crews, with responsibility for controlling doors moving to the two guards who each managed half the train. Finally, the introduction of driver/guard communications in 1928 allowed the CLR to dispense with the second guard, reducing a train crew to just a driver and a guard. The addition of doors in the sides of cars caused problems at Wood Lane where the length of the platform on the inside of the returning curve was limited by an adjacent access track into the depot. The problem was solved by the introduction of a pivoted section of platform which usually sat above the access track and allowed passengers to board trains as normal, but which could be moved to allow access to the depot.