If this faucet had worked properly when I installed it I would I given it a  5 star rating.  I have taken advantage of the lifetime warranty and installed a new valve cartridge. It now works very well.  When I first got this faucet it tended to drip and as time went by the drip got much worse until I had to locate the handle at a certain location to stop the drip. 
It works great now!
Installation of the new cartridge took about 1 hour.  It would have taken 30 minutes if the directions had been readable.  The printing is so small that one needs a magnifying glass to read it.