Ron (and others), part of the new Chinese/Brazilian/Egyptian/African/Mexican master cylinder problems is if you press the pedal all the way down you also can subject the internal rubber "cup" (the one furthest from the push rod) to the threads that are cut in for the end cap. At least that's what I learned after messing a couple of these up, because the threads go in too far now. The trick is when you're bleeding your brakes to put a piece of wood about 3/4 or 1 inch thick under the brake pedal so when your wife, son, daughter, homeless person is helping you they can't push it all the way down. The process will still work fine and this is less messy than bench bleeding and crawling under while the MC dribbles on top of you. You just can't hit the threaded part and you won't get the leak that tearing the rubber cup provides. Good luck!
