I have bled my 2017 GT brakes many times and have never had the bubbles completely stop. I use a home-made pressure bleeder as shown in the attached pictures. I follow the recommended wheel sequence starting with the right-rear. The bubbles never completely stop at the RR. They sometimes stop at the other wheels but not always. I usually just run about 2 liters of new fluid into the system and call it good. I always replace my pads before the friction material is worn 50%. My brake pedal is always solid and I have no brake problems at the track. I'm wondering if someone here can tell me why I can't get all the air out of my brake system.