How do I know if the home button is too weak and/or sunken ?

Hello,

On Dec 22nd I purchased an IPT5 and while it works just fine, the home button seems to have a very short 'travel' behind it when pressing it.

It does appear a little bit 'loose' also just by 'tapping lightly' on it you can feel it does not 'hold' and appears to be a little bit sunken.

How does your 'home button' feel on your IPT5 ? I do not want to return the unit if this is the way it's supposed to work but I also do not want to keep it if it is defective. I went to the Genius Bar this past weekend and the person told me it was ok. I looked at the other IPT5's on display and their home button felt a bit more 'solid'...

Would I be able to return it just the same if I choose to do so ? The date on the receipt says Jan 7th... so I understand it can be returned 'for any reason' before that date ?

Tks.