With the guidance one must first deal a few minutes, then manages the assembly but without any problems. There were all the items available, all fit well together.
The installation on the roof for two probably easier, but only does that with some rest without problems.
After assembling the carrier budge. Even after about 2500km with Board with an average of 100km / h (to overtake briefly up to max. 120 km / h) everything fits properly. The only thing that was loose again, was one of the interior plastic panels for the mounting. After I had this pinned back, but it also holds. Maybe I had this previously not plugged properly.
A good carrier with a good price, the fully served its purpose, I am fully satisfied.