Hey Guys, I'm having some trouble with texturing my map. Just so you know this is my first time creating a "semi-real map" so I'm still a newbie at this. I was getting textures that looked like this:

and this:

This is because the wall are made up of multiple brushes, because they use parts of other tunnels and include doors and such. I was wondering how can I get the textures to line up, without having to make it all out of one brush?
I'm also having trouble with these doors, sometimes they do this which is great:

But then sometimes they only parcialy show like this:

or

I have no idea how to fix the door problem, without just making the wall jut out more, is that what I have to do?
Thanks For All Your Help!
Warm Regards,
Kiwi