I have a 2 handled cartridge faucet that had been dripping from the spout, about one drip every 10 seconds maybe. The drips coming out were hot so I bought a new cartridge for the hot side, covered it with silicone grease, and replaced it. The faucet still dripped. I then tried taking the cartridge out, soaking the place the cartridge sits in with vinegar for 8 hours and scrubbed with a toothbrush, in case there were mineral deposits allowing water to slip by the O-ring, but that didn't help either. Does anyone have any other suggestions to try? Or has the faucet just corroded enough that there's a channel for water to bypass the bottom O-ring and so I need to replace the whole faucet? Thanks.