Thanks Richard.....It been a good 4 years since I worked on my Merc.Knew the car inside out then got into performance tuning of a Cummins diesel.Now I forgot a whole bunch.I know that I did replace the Warm up Regulator and I can't remember the pressure.I will have to start again from the beginning.I know that when I picked the car up in 1996,it was not driven for 4 years.I guess these cast iron FD tend to rust inside when not driven.I still get a slight miss when idling and have adjusted the fuel screw several times.Going to pull the CIS pressure gauge and start testing again.