I'm working on a Cruiser class (one that can carry 10 each of small fighters and rovers) Armored Personnel Carrier build that is on a large grid and is odd in width (meaning the width of the APC is an odd number).

I just finished the Vanilla version of it and now I want to deck it out with some mods, one of which is your Force Field mod.

I wanted to use the force fields to make an arch over the middle of the roof, but I couldnt get the two sides to connect.

Will you please help me fix the problem by adding a two-directional 1 X 3 Slant Pyramid?
I can add pictures, if you need clarification.