power brake pedal free play adjustment

I haven't ever heard of any kind of adjustment. But every time I've bled brakes, or a clutch slave cylinder, and there is play in the pedal, I just keep bleeding them until they are nice and solid from the get go (or close enough with like an inch of play). You may have bled them until it was steady fluid coming out, but there could still be a large air bubble trapped in the middle somewhere that didn't work its way down.