Hi,
I might be very wrong, but, I have just fitted a set of Gwyn Lewis dislocation cones and in the instructions it tells you to refit the springs so the hook catches on the very last coil when dislocated axle and that the end of the spring points towards the front of the vehicle if on the O/S and towards the rear on the N/S, also by looking at your picture the spring looks upside down I.e. The thicker part to the bottom (coils closer together at the bottom)
Like I said I might be wrong but that's what the instructions said on the kit I bought.
Hope this helps.