When resetting or upgrading your toilet’s supply system, it’s crucial to focus on components like the angle stop, supply nipple, and the wax ring, as these parts directly impact leak prevention and overall functionality. From my experience, replacing the angle stop improves water flow control and prevents potential corrosion issues that come with old or faulty valves. Installing a new supply nipple is equally important since it connects the angle stop to the toilet, ensuring a tight fit without cracks or wear. One of the critical steps is using a fresh wax ring during installation, which provides a watertight seal between the toilet base and the flange on the floor. It’s important to properly align the toilet on the wax ring to avoid leaks that could cause water damage over time. After installation, testing the connections by turning on the water supply slowly helps catch any leaks early, saving time and costly repairs. In addition, wearing gloves and having a bucket handy can make the process cleaner, especially during water shut-off and removal. For those undertaking a toilet reset or plumbing upgrade themselves, it’s beneficial to have a few plumbing tools like an adjustable wrench, pliers, and a putty knife for removing the old wax ring. By fully upgrading these components and double-checking all fittings, you achieve a leak-free plumbing system that lasts. This method also prevents water waste and reduces the risk of mold or damage from hidden leaks, keeping your bathroom hygienic and functioning optimally.