NDS Stuck L button

So basically my NDS' L button would get stuck at times. If I am running, say Zelda: PH, it would "lock" the selected item.

I have bene able to loosen it up at times by pushing on it really hard, or so forth, but nothing has been permanent.

Any advice on how to fix this issue? Note that 1.) I bought this in China (no warranty) and 2.) it's three years old (so the warranty would have long since expired).

Jam it back in, in the dark.

See, I was thinking of opening it up myself. It's like the "spring" inside is stuck. If I were to take, say a very thin piece of metal, and pry a bit at it, that fixes things...for a little while.

I actually have a second one, but that one isn't...special. As in, it can't play say....Soma Bringer. I'm not in China anymore so I don't have access to buy a secnod one that is special. However, things have changed so much that I wonder if I even need to flash a new NDS anymore...

There's nowhere I can't reach.