Congratulations on a Job well done!!!
The replacement of the potentiometer should be turned into an article in the DIY section.
Hmmm? idle at 1000 RPM?
Have you ever tried to remove the idle control valve and clean it with carburetor or brake cleaner? It worked great for me.
That's my suggestion to complete the job.
Thanks for keeping us posted.
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car