Are these things universally troublesome? My R trigger has ALWAYS been crappy, requiring me to push it in really hard to get a response. I fixed that by wedging a piece of a thick movie ticket in there, which eliminated the space between the button and the trigger. The L button, however, apparently accumulated too much dust inside, and completely quit registering around the time I fixed my R trigger. Last night, I dripped some alcohol in it, squished the button a lot, and blasted it with compressed air. Now BOTH triggers finally work again.
Has anyone else noticed this with their DS? I know my sister's DS Lite has a weak L button, and it seems like the dust issue, but I haven't bothered opening it up yet.