Simba,
A couple of the others have pointed out some issues.

Here is a video of cleaning up the curves:



I also re-visited your last post and noticed that the profiles weren't planar and added that to the end as another operation. (In that end, second one, I forgot to make the bottom points planar with the align tool after I moved them. This can create a non-tangent area that would need to be address)

Must be cleaner in the generation of your curves.

Also, your working way out away from the origin? If your working on some very large space station or something that requires that, it may be best to create your parts at the origin then assemble them into place far away later...