Rear of T43 is flexible and it doesn't seem to fit right..

[EL]

Just got my T43 2687DEU two weeks ago, and I noticed something last night as I was dusting it..

The rear of my laptop doesn't seem to fit right.. the middle part (where battery insert is located) is higher than the left and right end of the unit..

Also, the battery is inserted and locked correctly, there's a gap between the unit and the battery, which causes gray plastic cover above the battery to show.. is that normal?

Over all the laptop feels very flexible and bendable on the back of the unit..

Any other T43 has similar issue? Wondering if it's only me or it's a known issue with all T43s..