Semilandmark placement on a distal femur (curve and surface)

I am having trouble placing curve and surface semilandmarks. For the curve, when I resample the resampled curve is underneath the 3D model instead of constrained to the surface (with the constrain to surface option selected).

For the surface, I am having trouble placing semilandmarks just on the distal articular surface. I am not sure if this is because I do not have a singular landmark data set or because the curves have not been delineated yet

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