hexagonal grid LOFT problems

Hello,

I am quite still getting used to some of the grasshopper functions and am having trouble with the loft function in my design. The surface is split into hexagons using the "hexagonal grid" and then each grid is scaled down, and made to shift a certain value in the direction of that surface normal. 

When I try and loft these two hexagons together, it messes up and creates a round swish around the entire surface. 

The solution might be pretty obvious but I've failed to point it out after hours of trying.

Please let me know what is going wrong here. 

Thank you very much! 

Shreni.