So my GF's new-to-her Cannondale (I believe it to be a ST500 based on that it looks identical to this) came chainless and with a very bent RD cage. Looking around a bit leads me to believe this RD was prone to this sort of behaviour. Here's the thing, do we try and simply bend it back into place? Or is it not worth the effort, and should we concentrate on a suitable replacement?

(yes I realize pics are needed, I'm heading over to her place and will try to upload then)

believe this is the one in question http://velobase.com/velobase.com/Vie...9d5c9&Enum=108