Question about how to align hexagons

Hello !

I am currently working over a tutorial from ThinkingParametric in order to build beams that looks like the one from the Centre Pompidou Metz.

The problem is that my hexagons have a little problem that makes them a weird vertice that doesn't let me generate the final Sweep...

I would like if anyone here know the solution for this problem

Here the hexagons look nice, but whenever we zoom :

Also, this thing creates lots of planes instead of one single one for each vertice, which causes problems to the Sweep 1.

I'm a beginner in this software actually, and I'm sorry bothering you, but it's for a project I'm trying to develop for school. 

Thanks a lot !