Q-tip and alcohol is good as it won't leave any residue. You will know the maf wires are dirty once you dribble a little alcohol on them and gently wipe off all the crud w/ a q-tip. More than likely it'll be black when you get done.
As for the TPS, I'm curious to hear what you find out after you replace it as I know of another tour that has a problem w/ rough/stumbly idle.
