I don't think the pattern have to be that precice. On one broker it could hit 61.8, on others not. I see it more like a level and the price needs to go near that level. I think for this particular case, the convergence of the AB=CD completion and the 1.618BC makes this pattern valid. It may not be a perfect Gartley I agree, but there is still a harmonic convergence between the legs.