X Y A B button sensitivity,

Please direct this to the proper area if this is not in the correct one. (i figured this was).

FYI I've had it for 2 months and I'm EXTREMELY gentle with my DS lite (i got ocd)

I recently bought a DS lite, and I'm loving it. having no problems at all...until today that is. I booted up Pokemon platinum. I noticed my B button was sorta stiff (not extremely stiff or i would have noticed). At first i thought it was just the game being really slow and fidgety like most Pokemon are...

Upon examination of the sensitivity of the X Y and A buttons it was clear that my B button was really hard to activate properly. I gotta press it in rather firmly to get it to work (and running sorta starts to hurt my thumb, especially with the tiny buttons)...

I read around the net for easy fixes but i really found none at all. Other than L and R buttons.

Anyone got a clue to what i should do, I've tried the trick with the L and R buttons (wrapping your lips around it and blowing hard to clear them out) but there really isn't much of a gap for the byxa buttons so it didn't do a thing.

They don't seem to be dirty at all, and my hands are usually clean enough when I'm gaming so i don't see how this could be of my fault.

I could try and go up to gamestop and get a free replacement...but before i go that far id like some comments.
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thank you in advanced.

 

See if there's any dirt around the button. Or open your DS and de and reattach the button. If you want, you could try getting it fixed by a professional.