Just throwing this out there in case anyone has a similar problem. My GTV6 has been running really well for a long time, but it always had a bothersome idle, especially when the engine was cold. I covered up the problem by converting to a manual AAV. A couple of weeks ago the cheap *** lawn mower cable I installed as actuator failed, so I had to go back to the Bosch AAV until I could replace it. In the meanwhile I adjusted the AAV, and yesterday I went to the hardware store and got a couple of different o-rings to replace the one in the idle air valve. (I ended up installing one that's 9/16x5/16x1/8.) That improved things a little bit but the cold idle was still low and uneven. I installed Greg's vacuum kit a couple years ago so I was pretty sure I didn't have an air leak. Then I remembered the factory adjustable vacuum leak on the AFM. I've never messed with that before, but just went ahead and screwed it all the way in (it was out about 4 turns). My idle went smooth and steady immediately. I back it out slowly until I could detect a little unevenness, and then turned it back in 1/4. I also adjusted the AFM 5 clicks richer. I had to take my daughter in to South Station this morning at 35 degrees and the startup idle was perfect and smooth, and it ran beautifully the whole way.