In itself, this system is useful and even recommended! Were it not for during assembly, the realization that all 6 locking screws missing for crossbars .... since it is then final with funny. Everything degrade again, dismantle and pack in large box - drag the Post and the thing back! Unfortunately, there is no way the manufacturer to request the missing parts, but only to have to send the whole thing. Is cumbersome and annoying!
