OK,I get it...order from the LBS As far as whats wrong with it?Technically nothing,however sense day one have had problems with either A-Chain rub+hard to go into 3 on the chainset+chain coming off sometimes when going into 1....or B-Chain rub+goes into 3 most of the time+hard to go into 1...Now when I got it I had these problems and I tryed to adjust.I couldnt do it,took it to 1 LBS,they adjusted and said that my front derailleur was the problem(cheap) and I needed to replace it w/a better product.(I thought they were just trying to make a sale) Then took it to another LBS with a great rep,they adjusted it,and seemed good,still experiencing chain rub,but shifting seemed better...for about 2 days,then right back to the way it was.As I have looked into this derailleur I have discovered a few reviews saying the same thing I have been experiencing.Now why would sram put on an inferior derailleur is beyond me?...Also one review suggested the "X"models were designed to only work with a maximum number teeth of only 48,and mine has 52 which would explain a lot.