For a stuck shower head, apply penetrating oil and let it sit for 15-30 minutes before trying the adjustable wrench again. For corroded or stubborn handle screws, you can try placing a rubber band over the screw head for better grip with your screwdriver, or consider a screw extractor tool if they are stripped. Always apply gentle, steady pressure to avoid further damage.

After turning off the shut-off valves, turn on the shower faucet to verify that the water flow stops completely. If there's still a drip or trickle, the valves might not be fully closed, or you may need to locate and turn off the main house water supply. It's crucial to confirm no water is flowing before proceeding to prevent unexpected leaks.

A common mistake is not protecting the drain, which can lead to losing small screws or parts. Another is forcing stuck components, which can damage plumbing or finishes. Always cover the drain, use penetrating oil for stuck items, and wrap wrench jaws with tape or a cloth to prevent scratching chrome finishes.

Some shower handles have a small set screw located on the underside or neck of the handle, usually requiring an Allen wrench (hex key) to loosen. Others might be a push-on style that can be gently pried off with a flathead screwdriver (protected by tape) or a putty knife, revealing the main handle screw underneath.