I installed mine, and it really didn't take long. I did goof up on the front though. On the front of the camper, the bottom part, not the roof I installed the brackets and there wasnt enough room for them when I tried to mount the top ends on the roof part. So I had to reposition the lower brackets to the lowest part of the front to make room for the brackets on the roof. They were too close to the roof latches. I hope this all makes sence. I will post pictures soon, although they look just like mxvp's.
I agree with him on the strenght only being 40 lbs. I have the surf racks closer to the back then front due to the vents and my solar panel on the rear. 40 lbs. is pefect. The front half when I lower, I actually have to pull the bar about mid way down to get it to lower all the way. Once down, it stays though, and doesn't pop back up.
I will post pics soon.
Like I told other users, I went to suspa.com and got the struts for $20.00 each, and any bracket I needed for $2.00 each. They even had just the ball with a threaded end if you could get that to work.