"Ironically, I feel less pain when I'm engorged and DD feeds really well and quickly! My LC said the vasospasm can effect let down though so that may explain why things are easier when I'm full - my boobs have no other option but to let down! Lol!"

that's kind of what I was wondering. If you express a tiny bit - not to relieve engorgement but just to get things flowing - then DD will not have to do the really hard sucking that is typical of a hungry baby trying to get a letdown.