So i had the shop replace a rear brake line that was leaking and when they were bleeding my brakes they all were bleeding fine but the drivers side it just keeps spitting out a lil bit of fluid and not shooting out and the shop told me the only way to make it bleed is to replace the brake master cylinder is this true or what needs to be done here? I was like [censored] if the others are bleeding out fine then how is the master cylinder bad? shouldnt they just replace the brake line thats not letting fluid out?