Need help closing some sectors in Doom Builder for the Toke Tribute

[Naked Snake]

I'm getting some errors that will make this map bugged (you'll be able to shoot rockets through a this one wall) and I want to fix it, but don't know how, as this is the first time I've used DB seriously. Can somebody help me somehow? Either explain the steps (and walk me through it, because I'm a n00b) or let me send you the file and see if you can fix it for me?

[Ichor]

Every time you delete a line splitting two sectors, you'll end up with two unclosed sectors. To close them, select both of them and press Ctrl+J.

[Naked Snake]

I ended up redrawing the elevator and breaking it again and then fixing it again and breaking it again and then fixing it...

[Checkmate]

or let me send you the file and see if you can fix it for me?

Sure. Post it up somewhere and be specific about what and where the problem is and I'll be happy to look at it.