Sticky or otherwise twisted Key

Has anybody experienced a key situation when the key is hard to turn while the steering lock is disengaged.
this morning I watched a short video on the difference between china copy keys vs the original oem keys.

Okay so I have two keys both are original. They are not lets say in great condition after just over 100k miles of use. But the one I use as my main key seems to be as the video I watched said. Slightly twisted and this is the reason that it seems to get stuck when turning its not that it wont remove ect just sticks when starting up.

Anyhow I just wanted to share this incase anyone else experiences this and isn't sure what the cause maybe. Just take a look at the metal part and see if its twisted and also if you are wise do not use china copy keys because they are very poor quality.