Yeah 1.019 is a little high. You're using a calibrated hydrometer, right (i.e. reading at the proper temp or adjusting the reading based on the temp)? You could pitch another bit of WLP575 to finish it off all the way if you want to get it the rest of the way. How does it taste?
Primary: Stone Vertical Epic 08.08.08
Secondary: Oaked Arrogant Bastard
Conditioning: Dead Guy Ale clone, Double-Dubbel
Drinking: Not for a while