Half way to work Monday I get a squishy brake pedal and then it bottoms out shortly after. I found out what it was on my lunch break and took a video. This is screen shot of the vid when I was pumping the brake. Notice the bubbling on the right side of the red. I got a new rear brake switch on order with a pair of the crush washers. Anything else recommended that I should replace while it's down? Pads are new-ish with about 1100 miles on them.