A harvesting header comprising: a center section; a left wing hingedly attached to the center section; a right wing hingedly attached to the center section; and a wing locking system comprising: an accumulator; a fluid cylinder operably attached to at least one of the right wing and the left wing of the header; a hose fluidly connecting the accumulator and fluid cylinder; and a valve operably disposed between the accumulator and fluid cylinder, the valve having a first selectable position configured to permit fluid flow between the accumulator and fluid cylinder and a second selectable position configured to prevent fluid flow from the fluid cylinder into the accumulator, wherein fluid is permitted to flow between the fluid cylinder and the hose in each of the first position and second position of the valve; characterized in that, when the valve is in the first position, the flow of fluid into and out from the fluid cylinder is configured to allow the fluid cylinder to move the at least one wing (144a, 144b) to which the fluid cylinder is operably attached within a first range along a wing trajectory and when the valve is in the second position, the flow of fluid from the fluid cylinder into the hose is configured to allow the fluid cylinder to move the the at least one wing (144a, 144b) to which the fluid cylinder is operably attached within a second range along the wing trajectory, the second range being smaller than the first range. a center section; a left wing hingedly attached to the center section; a right wing hingedly attached to the center section; and a wing locking system comprising: an accumulator; a fluid cylinder operably attached to at least one of the right wing and the left wing of the header; a hose fluidly connecting the accumulator and fluid cylinder; and a valve operably disposed between the accumulator and fluid cylinder, the valve having a first selectable position configured to permit fluid flow between the accumulator and fluid cylinder and a second selectable position configured to prevent fluid flow from the fluid cylinder into the accumulator, wherein fluid is permitted to flow between the fluid cylinder and the hose in each of the first position and second position of the valve; an accumulator; a fluid cylinder operably attached to at least one of the right wing and the left wing of the header; a hose fluidly connecting the accumulator and fluid cylinder; and a valve operably disposed between the accumulator and fluid cylinder, the valve having a first selectable position configured to permit fluid flow between the accumulator and fluid cylinder and a second selectable position configured to prevent fluid flow from the fluid cylinder into the accumulator, wherein fluid is permitted to flow between the fluid cylinder and the hose in each of the first position and second position of the valve; characterized in that, when the valve is in the first position, the flow of fluid into and out from the fluid cylinder is configured to allow the fluid cylinder to move the at least one wing (144a, 144b) to which the fluid cylinder is operably attached within a first range along a wing trajectory and when the valve is in the second position, the flow of fluid from the fluid cylinder into the hose is configured to allow the fluid cylinder to move the the at least one wing (144a, 144b) to which the fluid cylinder is operably attached within a second range along the wing trajectory, the second range being smaller than the first range.