Finally got all of the parts after hunting for around 4 months. Accidentally stripped the nickel off the 3090 by running pure distilled water in a temporary loop in my old rig while searching for the AMD processor. Don't do this! I'll have to take the watercooler apart and clean out the remaining residue when I take the loop down for maintenance, I wasn't quite brave enough to do it before I had everything together the first time, so I merely flushed it well before installing in the new loop. That black Asus strip hides a few screws, and appears to be glued on, so I'll have to pop that off.