Corridor Assembly is offset when creating datum surface

[tlincolnAY44Q]

As you can see below, the red line (showing the edge of the datum surface) seems to be offset to the left of my corridor border/assembly (the assembly follows that blue line to the right). I keep trying to see if it is a link code problem yet I haven't been able to find the source of the problem. I am thankful for any advice anyone can give.

[tmachado]

Hi @tlincolnAY44Q, set your datum and top surface in the corridor properties to be like this image:

You will get a better result

[Jeew-m]

Dear Friend,

In addition to the Machado's suggestions make sure that you have added corridor extent as boundary in the corridor surface boundary. 

Thanks