Smokey Idle?

Hi Guys

Ive recently put a few posts on hear regarding my eratic idle which still isnt sorted? Since cleaning out the throttle boddies its slightlybetter, but not perfect. Sometimes the car idles just right, however, if it is left to idle for a long time (engine upto norm temp) then the revs start to go up and down? Ive tried everything I can (and you) can think of, but still no joy!

Anyway, the latest thing I have noticed is that occasionally, when idling oily smoke (smallish amounts) come from he exhaust. The car doesnt seem to loose oil, and when driving normally or hard it never smokes. its usualy when you drive around then ge to a junction, stop, (the car nearly stalls unless th aircon is on) then you can see a small clump of blue smoke from both exhausts. It only happens for a second or so?

Whats going on now!!?

Thanks in advance

Karl