Is there a way to edit after posting ? Typos occur, and new results / rethinking.

By the way, the mentioned last week cleaning of Dual EGR and sub-EGR was not big. I did a more extensive, unpleasant , first time for me cleanout there at least a decade ago, while parked in a public parking lot near an auto parts store, sleeping inside the camper shell, not wishing to antagonize family members and neighbors with smelly high strength carb cleaners ( maybe not now available , ff. Calif. environmental regulations?).