Concern about my Deathadder V2

So in January 8th, I got my new Deathadder v2, after 10 days of use, it started to feel like the plastic was cracking (even though everything was working perfectly), but something was feeling wrong. Like if the mouse would loose up in any moment, so I want to know if it's normal these sounds in the video that I'll post. And also sometimes the scroll wheel feels like it starts to do contact with something and I'm concerned about the duration of the scroll wheel and also the click, and the scroll wheel sometimes may feel like to light (or it is that way, I don't know exactly if it is like that, that's also concerning for me), any help or answer about this would help! Here's the link to the video about the sound of the plastic when I move my finger slightly from side, Idk if that's normal for the v2. (Edit: This video isn't corelated to the next video, Here's the video of the motion I do, a little exagerated, but even without exagerating I feel constantly that sound). And Here is another video of how the plastic bends and although it doesn't make a sound, it feels like craking or rattling. Help! (and also is my first post, sorry for the length).