On Wednesday, July 24, 2013 8:23:25 PM UTC-7, gary wrote:
If the Spray teflon (PTFE) lubricant doesn't do the trick, how can identify the model of my faucet so I buy the correct parts? What part(s) may need to be replaced?

Post a picture of the stem or cartridge or
turn-off the water and take the stem or cartridge
to a plumbing parts supply store that also sells high end
faucets etc.