Nice model Josiah! To solve this problem you may like to try the following solution: 1) Convert 1st half to polygons 2) Duplicate 1st half 3) Combine both halves 4) Merge all the vertices on the centre-line 5) Convert your model back to subds Your problem is do to with continuity. By connecting both halves before you turn it into a subd, you keep continuity over the seam and lose that nasty looking line. I believe Alex Alvarez has written a good little tute on the subject. Simon