Dsi charging port

I have a query about the charging port in the DSi. We got a preowned one from Gamestation today and I noticed that the pin inside the charging port isn't straight and faces upward slightly. This didn't look right to me and gave the shop a call and he said I could bring it in and he would take a look and possibly exchange for another one.Anyway, I have a DSi XL (bought new a few weeks ago) I had never looked at it before and the pin faces up in this one too! Also I checked my daughers' DS lite and that one does too. Although all 3 don't look exactly the same, are they made this way?

Are you saying that the pin looks like it leans forward? If so, yes, I think they all do that.