Product review (5 stars): Worth every cent and an easy do-it-yourself job
Huge improvement over the stock plastic set.  After almost a year of ginergly pulling out he top rack (so as to not pull it off the wheels), I finally decided to do the "upgrade" kit.  Why didn't I do this month's ago?  The replacement is so much sturdier.  Once you get the parts oriented in your mind it's less than a 10 minute.  Maybe there's a video online for it, but I just used the enclosed instructions, and it was a breeze.