My kitchen faucet is dripping. It is a single lever Delta faucet.
Sometimes it drips faster sometimes slower, if I push the lever down and
hard sometimes it will stop the drip - until I have to use it again.

Is this something that will require a replacement of the faucet, or
replacement of some parts? I plan to shut off the water supply, there is a
bolt at the base of the lever that I will open up and see. But not sure
what I am looking for. I tried to remove the entire faucet unit but the
"ring" at the base under the counter top is real tight and nothing I have
will free it, I have a wrench large enough but not at the angle where I can
apply any leverage and no room to have any "bite". Is there something I can
do to fix this from the top?

Thanks,

O