No matter how much I raise the drain stopper lever (yes it is very thin and angled - 
 I ensured the quartz counter top was fabricated to allow adequate room to pull up) the water drains from the sink.  I'm very dissappointed.  The faucet was installed by a seasoned, licenced plumber.  The stopper seal isn't tight enough to hold the water in the sink.  The sink is a Kohler so you'd think there wouldn't be an issue.  Have had many Kohler products over the years and the quality has, sadly, declined.