My older pattern ships, Curare, Escape, Deception etc all have the stabilizer/elevator placed above the engine thrust horizontal line. My old RC City Vortex (precursor to the Typhoon) is more of a mid-wing design with the wing and stab in almost a straight line. Most newer F3A pattern ships have the stab/elevator placed below the engine thrust line. What effect does stab/elevator placement relative to the thrust line have on the flying characteristics of a pattern ship?