in the multisection the spline must be closed and intersect the two profiles....this is clear to me....the situation that comes to me is that in figure....every operation that I try to implement (relection, incidence etc...) does not arise effects in order, the first because it works only on the knots of the grid (the scale is already 2:2 mm smaller I have already tried but I do not give it to me) the saddle because it coincide ? ? ?