Thanks again. After disconnecting the EGR, idle speed screw was backed off about 3 turns and she settled down nicely. Idle mixture screws are about 1/4ish turns from seated. It runs really smooth now.
I wonder if the PV was blown. It did backfire a few times at first startup. Maybe I'll pull the bowl off and check it tomorrow.
If the diaphram ruptures the bowl will empty through the vacuum passage into the manifold. Look down the carb ypou'll see a fuel - depending the gasket you might even see it around the base externally. If its idling decent doubt its ruptured.
