My local growler bar establishment always fills the growlers to the top. Due to the overfill I often watch precious beer being wasted down the drain while they fill. Then when I get home with my glorious beer, there is a special pour required, moving the glass to the growler, to avoid any spillage. The local breweries always leave a half inch or so to not require acrobatic moves to maintain the zero waste rule, self imposed. Does anyone else experience this? Or, even care?