I noticed my right rear wheel was feeling a bit warm, so it's likely the caliper was getting a bit sticky. It never seems to make it through a set of pads before it gets sticky. The good news is that I think I caught it early because my rotors and pads still seemed ok. Since I was already there I decided to rotate the tires since they were over due and preemptively addressed the left rear caliper as well. While under the truck I noticed I've started to get some pin holes in the exhaust at a few weld locations. I suspected the exhaust might not last a lot longer so I've been watching for a used Fujitsubo system in Japan, but no complete systems have come up. I'm thinking I might get the next partial one that comes up and then I can have a custom downpipe made up at a larger diameter and then taper down to the Fujitsubo size which is 70mm which is also the same as what's on the truck now.