I bought a copy of Zelda: Lttp off of ebay, and the cart looked really good. I pop it in; nothing. So I take the cart apart and BAM: there's so much corrosion on the connectors that it looks like some are missing!

The solution I came up with was to get a razor blade and scrape away at the corroded pins. It worked: mostly. Now the game starts and everything seems to be going smooth, until I go to get the Butterfly Net from the sick kid, then black screen. (it happens on other random moments, so an answer of "don't get the Net then" won't suffice :-) )

I'm guessing that the system is trying to access one of the pins that is still too corroded, but I don't want to end up shaving too much of the pin off.

So, any suggestions?