Dealing with a seized kitchen faucet mounting hardware can be a frustrating experience, especially for those new to plumbing repairs. In my own experience, the key to a successful replacement lies in patience and having the right tools at hand. When the hardware is stuck, applying a penetrating lubricant and allowing it to soak for a while can loosen corrosion or mineral deposits. If that doesn't work, carefully cutting out the old faucet as described can save time and prevent damage to the sink. It's important to clean the mounting surface thoroughly before installing the new faucet to ensure a proper seal. Testing the faucet for leaks after installation is crucial; even a tiny drip can lead to water damage over time. I recommend turning on both hot and cold water and checking under the sink with a flashlight to spot any moisture. This kind of plumbing repair, often performed by service plumbing techs, enhances kitchen functionality and water efficiency. With the right approach, replacing a seized faucet is manageable and rewarding, restoring your kitchen’s performance without the cost of professional service.