I just got done cleaning my MF Switch (use your own interpretation). It was a little akward getting the connectors unplugged because I didn't take the time to take the top half of the steering column cover off. It probably would have been quite a bit easier. Bottom comes off with three screws and the switch itself is held in by two others that are not the hex kind but the other kind that looks like a star. (Sorry for my ignorance right there)
In any case, I took the switch out, pulled it apart (5 screws) cleaned all the metal parts and put it back together. There was grease and something that looked like oxydization on the inside. I scraped the oxydization off with some sandpaper. There are quite a few parts including many springs so you have to be careful. Watch how you take it apart so you remember how it goes back together.
My right blinker was doing all sorts of wierd things. This seems to have fixed it. One thing to note is that the high beam part of the switch is a tongue and groove type switch. If you are not careful when you put it back together, making sure to slide the parts together properly, you'll end up with your high beams on permanently and you'll have to take it all apart again like I did.
Mines a 97 with a little over 70k on it. The blinker started acting up about 3 weeks ago.
I hope this helps someone!