Well I just cleaned mine tonight. I had a spare IAA from my spare engine laying around, so I cleaned it up, cleaned the sensor contacts, and swapped it. Smoooooooth idle, and I think the hesitation eased up a bit.
edit : after driving her for the weekend, I must say DAMN it's running good. Idle's smoother than it has in probably the past year, great gas mileage, and get this: pulling onto I-95 from the shoulder tonght, I chirped going into 2nd
Havent' done that since I was at cecil county on a 32degree track(granted my clutch is a bit work, but still). I'm a happy man