Nurb Curves

Hey everyone, 

Im new to gh and this is my first time posting. 

I've written a script that creates funnels that is attached to a curtain wall. 

I have been using the weight options within nurb curve to manipulate my curves.  However, there is this one nurb curve that i've been trying to create but always fail.  I have 2 breps, and the data i need is represented in 3 lists.  The 3 lists are the start point, mid point and end point data for my nurb curve.  Within each list, are 2 sublists, each representing one of the breps.  I've used the panel button to make sure that all the data coming out are consistent.  However, when i attach everything into the nurb curve command, i am still having trouble creating the curves.  Any thoughts?

Any help is appreciated.