L button reattachment

So I was playing spirit tracks when my L button made it impossible to move because it always wanted to use my tool. Then I turned my DS off and at the game select screen it was selecting the ds backlight control by L button I tried using a different battery and in the end the only way to fix it was actually opening my DS and ripping off the little L button cube. Is there anyway I can reattach it without having the same problem as before?

put the spring inbetween the holes and put the netal rod through that and just put it back in the place it came from and it should work ;D ;D ;D ;D

Replying to #2

Well what about the soldering? I've never soldered anything before and I don't know if it's safe.

Blow into it.

Replying to #4

no, I literally detached it and need to know how to reattach it.