Thanks, I actually just came across an older post on reddit showing Tektro kits work. To be fair, I’ve got 3,200 miles on my Defy and the brakes haven’t given me any issues either. Even now, with the brakes getting spongy, I have no complaints with it. As for the stem, I don’t think they would change it so maybe I’ll do some more research. Maybe it’s because there is some damage to the master cylinder itself?