My floyd rose is not working properly.?

I have an egde 3 ibanez locking tuner tremelo system. Ever since i bought the guitar, it has given me nothing but trouble. My problem is when i push down on the bar and bring it back up, all my strings tunings are flat. When i pull the bar back to raise the pitch and then let go, the same thing happens although the strings are sharp not flat. I have looked everywhere and no one seems to have this problem. Please someone help.