Front calipers not releasing

oh, it works ok, but it is much. much easier to just grab a friend, or relative, even a kid to work the brake pedal. I've never tried a mity vac, so I don't know how easy that is to use.
The way I see it, compared to a human, is that there is no "follow through" kind of like a bunt in baseball. Kinda sorta works but no real hit.