Rabbit hole? What's that?
Since the rear wheel was off I might as well tidy things up a little, a few hours later there's probably a couple more to go. The chain spent the day in the ultrasonic being moved around every 8-10 minutes. It only effectively cleans right around the transducer, I think because it's so heavy, and so grungy. While it was being cleaned I pulled and cleaned the chainguard, sprocket, etc. Got the inboard sides of the mufflers, the swingarm, and other stuff that'll be a bitch with the wheel on.
The sprocket carrier is being stubborn, it might need to be sanded and then polished to be nice, but I'll probably not go that far for now. The brake carrier will probably be about the same. The aluminum is spotty and darkened; I tried steel wool, a fine wire wheel, aggressive compound, and the discoloration is still there. But they're cleaner and smooth.
The left case cover will have to come off to install the chain so I'll probably give it a squirt of black paint to de-ugly it some.
The new tires are a fair bit taller and fatter despite being labeled the same size. It's a little easier to get onto the center stand now, I don't know why Yamaha made it so damn high.