I have no idea what is going on with your bearings. Your master is wrong, a 7/8" bore would add a lot of pressure at the equal pressure input from you. Could be as much as 20% more pressure. As for stopping / locking the brakes. Those 140 - 2285 are pretty small at 10.75 . They will stop the car, but they are not exactly big brakes.
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Frank Serafine
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