For this part I created a nurbs plane with very low patches and position it at the end of the back body frame. Once it was place I increase the numbers of patches.
44: Circular Fillet:
Complete one more circular fillet.
45: Trim:
Trim the body frame.
46: Trim:
Trim the extra geometry.
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47: Results:
Run the round tool and change the transition to your preferences.
48: Surface:
Bring back the other side of the geometry we were using at step 35
49: Display Surface Origins:
With the surface selected Go to Display - Nurbs Components – Surface Origins. Here you can see the u / v direction of the surface.