I removed the DV holder to inspect and found there were two crush washers installed at some point. I cleaned the barrel and pintle. I couldn’t really see anything wrong with them. I installed a new washer and O-ring then put it all back together. I fired it up and still had the same air foamed fuel spewing from the line when cracked. I’ll investigate further when I have more time tomorrow. I do believe that it’s a rust/debris issue. I also plan to speak with the local Bosch repair shop and see what light they can shed on the subject. Thanks for the replies and suggestions.