I ordered a new tub seal, and followed the incredibly useful video for replacing it. Along the way I had trouble getting the trunnion block off because I sheared off one of the bolts, so I finally removed the trunnion from the inner tub and decided to replace that too, since it was covered in gunk. Took a while of mostly waiting time for the rust buster to do its thing, but the repair itself was really easy thanks to the videos. The parts diagrams were also really useful to show me exactly which parts I needed and ensure they would fit my machine. Washer works great now!