The setup: A friend of mine calls me up and tells me that his rear caliper on his 5 Gen locked up on him. He asked if what I thought the issue was and I could check it out. My first thought was either the SMC or the main MC had a blocked return path or that the caliper pistons were stuck/corroded. He asked if I could help him with a rebuild and would it make sense to do a SS line replacement at the same time. "Yep, best time to do it" I told him. So that was the task.   So, after