I just received my Evo 3D and the first thing I noticed in the Camera Button is Sticking! I have to push on it near the back of the device to get it to free itself, otherwise it will activate the Camera.
There are always going to be manufacturing issues. Remember back to the initial EVO 4G release? Duster under the screen, light escaping from the glass, etc... This is nothing new. There will be lost more to come but just understand that this is the nature of all things manufactured.