Oh dear. Picked up truck front a front axle strip and thought would try the front diff on salisbury plain. Front diff locked on and no matter how many figure 8s and reversing, I can't disengage the front diff. Was close to tilshead so limped into town and parked at murco. Any suggestions what to do next greatly appreciated. Caught short without tools as was just trying out one way home - doh! Breakdown cover is only onroad and explaining a front diff on salisbury plain may be tricky. Least we have the kit to camp if necessary.