Open that sucker up, take stuff out and in while going through 7 cans if condensed air.
If that doesn't work consider urinating on it.
If I can highly suggest not using compressed air alone or at all. Vacuum that shit, suck it out, dont blow it around inside. If you use compressed, use it to dislodge anything so you can suck it out. Compressed air alone is useless.
So glad Jambs been here for the last 5 years to see all these arguments made, sometimes implemented, but mostly fail. I would sure hate for some other fuckin noob to come here and tell us the shit we should do that we done before and didnt work.
Take Rajaks advice: Get the FA server seeded with maps you want and then you will have a leg to stand on with your arguments. You are better then all of us? Prove it and make that fucker sing.