That looks to me like the piston is sticking and not returning fully.Well I’m looking for the right price that I can’t pass up. Going to do the rcs19. Will find some 4pots later. Maybe off another bike that will bolt on. For now I attempted bleeding the master and this lil video is what I got.
Not good.
Strip it and recheck the assembly is correct.
You did tighten the banjo bolt before you released the lever, right?