embo9, you should clean the faucet with every line clean. Take the faucet off of the tower with a collar wrench and then take it apart. You can see a diagram of the faucet
here (click on replacement parts). Be careful not to loose any little pieces down the drain. You can soak the dissembled faucet in the cleaning solution for a couple of minutes. Don't touch the cleaning solution.
You will notice two faucet vents (small holes inside part #7 - faucet body). Stick a tooth pick in there to clean out the build up.