How difficult do you think this adjustment task is?
How long did it take you to do the job?
Any other changes that you made when you had things apart?
We downloaded a copy of the slide out manual from the manufacturer and followed the directions. They were pretty good and with me and the wife both looking at them we figured them out. Getting to the motor and the cables was a pain. I was unhappy I had to do it at least twice. There was a sticker next to the motor that describes what to do, but I think the manual helped more.
I had to do it three time I think so I got pretty good by the end. I would say plan for a day or so. I had to go get hardware to get locking hardware once I had it apart so I could get the correct sizes and that slowed me down also. As above it takes more time to get access than to do the job for the most part.
I replaced all the hardware with either lock washers or jam nuts or a combination of the two. I would have used nylocks but they would have been a royal pain to adjust later so I went with the lock washers and jam nuts. I made sure that it could not vibrate apart. If you only want to do it once keep that in mind. If the parts are not locked together mechanically they will come apart as you drive.
Mine is a 2011 NT with a slide out that is operated by a motor moving 4 cables, one attached to each corner of the slideout. If your newer NT has a different slide mechanism none of this would apply.
It turns out I did not do a post about he repair that I can find. I can send pictures of what good cables look like if that will help.
Good luck,
John