I also reloaded the first couple of set items I found, to see if they were random or fixed. With the DLC Blood Echelon set, there are random enchantments/stats that are presumably fixed the first time the game accesses it, which will then be the same in subsequent games. Maybe there is some random variation in sets determined when a new game is started, or differences based on the starting class, character level when you first enter the flying fortress, or something.
