I'm trying to work through some idle issues. At this point I'm all self-taught using the Bentley and reading the Brickboard. Thanks for any help you can provide.

Here are the symptoms:
-On a cold start (I haven't checked a warm restart) the rpms rev to about 1500 and then settle back towards 750-800. I say settle towards because the trip from 1000 to 800 seems to take quite a while, 15 seconds or more. Afterwards the car idle is steady at about 800.
-This behavior continues as the car warms up. When I put the clutch in, the idle settles but slowly.
-Here is the confusing bit. When the car is warm and idling at a stoplight for about a minute, the idle speed will increase smoothly to about 1000 rpm and stay there.
-Wherever the idle is, it seems consistent. It does not dip and surge every few seconds or anything like that.
-The car starts, drives and runs well otherwise.

Here is what I've done:
-Checked for vacuum leaks. Everything looks good to me, but being a bit of novice I could be missing something.
-Check for codes in both 2 and 6. 1-1-1 from both.
-Cleaned the IAC valve. It did it when I was in doing the breather box and intake manifold gasket a few weeks ago.
-Tested the IAC. The lowest ohm reading I could get was 9.4 ohm, which is a little high according to the Bentley. (Too high?) I also applied battery voltage to it and it seems to move open and closed easily. (Protip: Use something to keep your test clips from falling together on the IAC. :)
-Swapped in a clean junkyard IAC which was actually worse than the original.

My questions:
-I read somewhere (the FAQ maybe) that dirt at the IAC connector could cause something like this. Anyone have experience with this? How do people clean their electrical connections?
-Should I be chasing something other than the IAC? If so what?
-I've got EGR. Does the EGR valve contribute exhaust to the intake at idle? Could a leaky EGR valve give these symptoms?
-I remember a post recently about a cheap aftermarket IAC, but I can't find it. Anyone remember? Maybe I'll need it.

Thanks,
Spencer