New Master Cylinder and can't get air out of one brake line

Got an update. It was sucking air through a cracked bleeder screw. Replaced the bleeder screw and got all the air out. Took it for a drive and it stops well but the pedal seems to have more travel than before. Would that possibly because of the smaller 15/16 piston?
Unfortunately that happens more than it should, last time the store manager for one of the nat'l parts chains brought His '70's T/A for a set of rears & brakes, guess what
heppened & it was close to quittin' time!!! Pass. rear refused to stop burpin', yep.......................................................