Enhancement sought in 800/900

PMDG,One thing that would be GREATLY appreciated in the next service update or the 800/900 would be the ability to assign a keystroke to the engine start levers on the throttle pedestal. While the default FS keystrokes do manage the fuel to the engine correctly, the levers and the valve logic doesn't follow. For example, when you try to cut the engines off (using Ctrl-Shift-F1), the engines die but the levers do not move, nor do the valves close according to the lights on the fuel panel.