When all the parts are out, inspect the interior of the valve for bits of deteriorated gaskets or mineral deposits. Use a cloth or fine nylon abrasive pad to clean the surface. Loosen mineral deposits by soaking them in vinegar. If you’d like to learn more about Faucet repair (crystallightingparts.com), check out our in-depth interview with Dave Jones. If you can't get exact replacement, adapters are available for connecting different types and sizes.