The faucet is a peerless, split handle that is dripping from the spout. I took it apart to buy replacment parts which I couldn't find so I re-assembled it which wasn't very difficult as there were few parts. Now with everything back together both hot and cold handles are in the off position (or any position) yet the water continues to run. I've taken it apart several times and put it back together but it still runs. What's wrong?

Since you've had the faucet apart can you tell me if it has a cartridge or a washer? Note: Delta took over Peerless and is now the manufacturer.
Regards, Tom

It has 2 black o rings but inside it is one complete piece with a metal inside. You have any pics that I can compare it to?

Take a look at these. Just the cartridges. I realize the valve isn't the same but the cartridges might be.