Inspiron i5559 - Three Questions

I bought a Dell i5559-3347SLV. It's an Inspiron 15.6" laptop, shown here: officedepot.com/.../Dell-Inspiron-15-Laptop-156- Screen/ I've had it for a week, and I pretty much like it for what it for what I'll be using it for. I've looked at both the User's Manual and the Service Manual, but, I've still got three questions:

1) When I close the lid, I notice that it doesn't close completely flush on the left side and partial left front. There's about a 3/16" to 1/4" gap (nearly two credit cards can fit in the gap), whereas the right side closes fairly flush. If I run my hand (not much pressure) from the back to the front of the left side of the lid when it's 'closed', the gap goes away and the whole lid is nice and flush. I don't know if this is worth exchanging for another laptop of the same model, or not. I think that the left hinge is just a little tighter than needed. Any opinions?

2) The machine starts up with the NumLock off. I haven't gone into the BIOS to see if I can change the default to ON, yet. However, when I do press the NumLock key to turn the number pad ON, I don't see any Fn key light up to indicate that it's on. The only thing that indicates that it's on is in the Hidden Icons box, for which you have to click to expand, and then if the NumLock is on, it contains a square box with the number '9'. Who wants to have to go thru that to see if NumLock is on?

3) Should the power button, which is round with a translucent, verticle stripe dividing it in half, light up when when power is on, or turn orange when sleeping or in screen saver mode?

TIA