Thanks Rick! I have 170K on the car. Today I noticed that the idle is perfect, even when in drive, until the temp gauge gets to just under the 80 mark. Then it only idles a little rough when engaged in gear at a stop leading me to believe it is possibly a temperature related issue maybe? Idles exactly the same with or without AC on. Put it in park or neutral and voila, perfect idle! I will check for those vacuum solenoids like you said. Haven't checked dist cap or rotor yet but sure it will help if new or cleaned up. The idle is totally liveable but I know it's capable of better due to the good "cold idle".
Steve