Well, after being told by "Ford mechanis" that there was nothing wrong with my car and that the rough idle was just the "nature of the Beast" I set to work myself. 1. Checked air filter - almost black, box has dirt, leaves etc in it. 2. Clean box & replace filter. 3. Install Tickford snorkel. 4. Buy 2 y.o. IAC from low mileage wreck, clen and install with new gasket. 5. Remove, clean, and reinstall throttle body with new gasket. I would say 80 - 85% of the problem is gone, BUT, the engine seems to fluctuate from 750 - 900 or 950 rpm in idle. Any ideas on the possible cause. I didn't touch the TPS other than disconnect the electrics and hook back up clean & dry. Will be fitting EF lid with mods over weekend, but need to sort out this new problem. What think ye guys? You all come back now - hear!