I'm not sure I agree....you may be right, but the flip side is that we don't know what the metal elbows are made of, they are some sort of aluminum alloy which may or may not have corrosion issues. Also, the only thing that holds these elbows in the hole is the O-ring, there's no metal-to-metal contact for seating or sealing purposes where corrosion would make it difficult to remove.
I am *hoping* that the Dorman engineers took these things into account when they designed the elbows, but only time will tell I guess. Besides, if they don't leak there is no need to remove them
