Patient- 1983 300D, 450k+ on odo.

Complaint-#1. When first starting I have to give it some fuel, via foot on accelerator, just to hold at idle. have to do this for 3-5 min in order for it to run on its own. After it warms up a little she goes fine.
#2. When shutting down it takes 10+ seconds to turn off, sometimes it is immediate.

I just replaced old glow plugs with new Bosch ones and adjusted the screw between IP and block(engine was hunting, now not.) Fairly new filters all around(minus trans and P/S)
So I am thinking that the problems I am having are vacumm related, especially#2
Finding the leak in a line or connection or even replacing the shut off valve is all easy enough just need to take time to do it.
On #1 I am guessing that it could be vacuum problem and definately fuel delivery related(Does EGR do anything to warm up intake during start up?) I see that there is a line connecting the EGR and a Temp sensor and or switch near T-stat . How do I check these components?

Any help is much appreciated thanks Zach