Ok I posted something similar to this not to long ago but I think I need to adjust my mixture on my mechanical injection (k-tronic I think). The thing is when I start it when it's cold it revs at around 1500-2000rpm but after it warms up it idles at around 500-700rpm. But it has a tendency to idle to low and stall at a light or whenever I have to stop. I'm 99 percent sure it's not a vacuum leak. Is it possible it's something else instead of the mixture. I was thinking maybe the fuel dampener or something. It has new injectors, fuel filter, fuel pump, rebuilt fuel distributor, spark plugs and wires. This is driving me crazy trying to figure it out. Any help would be appreciated

Indeed you did post essentially the same thing just 8 days ago; you might be better served by keeping this all in the first thread.
Your post of 4/22:

Hey guys just got my car back on the road after 20yrs and I've had the injection system rebuilt along with everything else replaced or fixed. It runs great but it idles really high when it's cold and doesn't idle down until it is good and warm. It was idling down to the point of stalling but I adjusted the idle and that is fixed now. What I'm asking is does anyone know what could be doing this. Is there another adjustment that can be done? Or could it be a bad part? Also after it's warm and you shut it off when you try to restart it you have to crank on it for a few seconds. I haven't replaced the accumalator or the small regulator under the hood. Any info would be appreciated. Thanks

You have referred to "the small regulator". Pictures would help in identifying the item.
Given recent work, you should be 99.99% sure about a random air ("vacuum") leak.