Surface Help.......Please

Recently found that me and a few others were building the surface the
wrong way. Now I am having problems trying to get things to come out
correctly. I am using AutoCad 2005 Civil, LDD, Survey and am trying to
get the contours for a road project. This is how I am attempting this
unabtainable feat. Create new surface with Terrain Model Explorer, Add
Point Group with the points the survey crew collected, drew 3D
Polylines by elevation along the lip of gutter on both sides of the
road, created breaklines using proximity by polyline and selecting the
flowline, median islands, and lane lines, built the surface using
Terrain Model Explorer, Imported 3D lines into drawing, then created
the contours and it just doesnt come out right! Maybe im missing
something or just doing it totally incorrect? Hope someone can help me
out with this one.

Thanks