I have the same issue with my 74Tii. I have it idling at 1000 and its steady as a rock. The car seems to run fine at highway and around town speeds until I stop. The revs drop and sometimes stalls. A simple blip of the throttle brings it back to normal idle. I followed the KF setting procedure, checked all linkages for length. The 289 was long by 1mm and I adjusted it to the correct length. The links are all new as some still have the BMW labels on them. I disconnected the retard valve and plugged the vacuum lines. That did make a bit of a difference but still it stalls and sputters at stop. All ignition was checked cap, wires, plugs etc. Timing is next. Something tells me it's vacuum related but we'll see. Any additional suggestions appreciated.