Jet Flash,

Since you fly in the US, you do know that AMA turbine regs. require a manual shutoff valve in the fuel system, right? Personally, I've never had to use it for safety purposes, but I know of instances where that was the only thing that saved the plane from being a flaming lump. Also, its a very good precaution to keep from filling your turbine with fuel when fueling the aircraft in case the electronic valve does not close completely or effectively.

Bob