Glass door

I decided to do a glass door for my desgin of Ligini towers.

Great help was the post of Laura Vellucci how to create curtain wall doors. THANK YOU :)

Though my design is a little different - I am using a two sided doors, which means, they are made of two extrusions instead of one. First i set all the refference planes, set the parameters and then made extrusions:

As you can see on the above picture, there are also door handles, also designed with the parameters, so that their legnth and radius depends on the thickness of the door frame.
On the next picture you can see all the parameters, set for the doors. I also set the parameters for the materials - one for the fram, one for the handles and one for the door filling (in my case glass)

Though i have noticed one problem. When i imported the doors into my project, they are not made symetrical, even though that the distance from the center to one end and to another are set as equal. What could than be the reason?