Concerns with RadCity 5 Plus Hydraulic Brakes

Update-Rad Tech support reviewed the videos and determined that I have a defective rear brake assembly, which they will replace. If there are any markings indicate what brand I will update this thread.

On a very different topic. I am always encouraged by the generosity of people who share their knowledge. This forum, and the sites reviews, have really helped me get back into my love of riding. Thank you all!