Hey everyone! I was cleaning my MBP today and I noticed that when it is closed, the vent plastic on the back is not flush with the aluminum on one side (left side when looking at the back). Also, when I open my MBP, I hear a soft creak/pop (on the right side of the hinge) at about 90 degrees from the base. I have not dropped or damaged my MBP in any way. Does anyone know if this is normal or something I should be concerned about? Please let me know. Thanks!