Controlling Loft Curvature Radii

I'm lofting a part using multiple cross sections and a line "guide". The guide has a sharp 45 deg corner in it. When I loft the part, the resulting surface is smooth and does not tightly follow the guideline to make the sharp change in direction. How can I control the degree of smoothing (or the radius of curvature of the lofted surface) in following the guide? I'm familiar with the start/end constraints for the loft tool, but there seems to be no input to constrain how tightly the lofted body is to follow the guide?SolidworksParts And Features