My Fournier is coming on slowly (I am a very slow builder) So, I have nearly finished the fus and am looking forward to making a start on the wings.
Having read the magazine article and studied the plan, the position of the wedges is clear and the text error in construction for the second half of the wing fairly obvious. Peter's pictures above make things crystal clear but it is worth pointing out for clarification purproses, if only to confirm that washout is appropriate to both halves of the wing!
What is interesting about Graham's response is the apparent "tweaking" of constructional text without reference back to the author. Perhaps if this had been done prior to going to print the issue would not have arisen.