Well it appears I've done it again. To save money, I went after a water pump change on my 83 380SL. What a job. I completed last night and it runs vvvery rough, especially at idle. Anyway a few notes from the shop desk.

1. Removed the crankshaft bolt, realized later was not warranted. Seemed to replace without a problem.
2. In performing above problem step, turned crankshaft backwards about 40-50 degrees.
3. Distributor was marked, removed and replaced.
4. Smokes rather badly.
5. Best running position for the distributor is 10 degrees different than mark as in point 3, and is at the "end" of adjustment.

I am ready to "throw in the towel" on this one because I'm scared on what is the real issue here.
Please don't sugar coat it. Thanks in advance.