Alienware M14X overheat and screen issue

I have an M14X R1 which is about 7 months old, and recently I have noticed the fan turning on a lot more often than it normally does. I wound up downloading the CPUID temp app, and noticed when playing Far Cry 3 and Metro 2033 for about 5 minutes or more, the CPU spike up to about 98C, and then game starts stuttering, even if there is not a lot going on graphics wise. The CPU fan tends to turn on a lot more often than it did in the past ,even if I am using power-saver mode with the battery, and all I have open is gmail in Chrome. I had an M1530 before, where they came out and re-pasted the CPU and it fixed the heat issue, is this the same situation here? I have the i7 quad core and 555GT 3GB model (1600x900 screen).

Additionally, my wife noticed this weekend, I noticed I have plastic smudges on the screen (the plastic part, not the actual LCD screen behind it) and it looks like it lines up with the bottom of the keyboard tray (the hard plastic surround). Has anyone else ran into this issue? Is it possible to replace just the plastic cover? The screen works fine, I just can't stop looking at that line now that my wife pointed it out. Is this something that may be covered under warranty?

Pictures attached, although it's tough to focus on the screen part as it's glossy. It's much easier to see with the naked eye.

Screen position:

Keyboard section that it lines up with:

Up close of the scratch type:

Thanks in advance as always!