All brakes stuck on

[Xotik H3]

I vote master cylinder as well. If it affects all 4, it has to be common to all four. Also, isn't that piece you speaking of the brake booster? I have not gone out and looked at mine, just going from memory.

[Dan]

Yeah Im assuming its a booster. Im just used to seeing the big vacuum pancake ones from the old days. And wasnt sure if that thing could be the issue somehow.