Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to remove a stripped screw [title] Maximize the grip strength. [step] If you can still grip the screw head with a screwdriver, try one last time to remove it by hand. Follow these instructions first to maximize your chances : [substeps] If the screw is fastened to metal, spray on penetrating oil, such as wd40, and let sit at least fifteen minutes.

Ending1: Use the largest manual screwdriver that fits your screw. If possible, grip the screwdriver handle with a wrench to get more leverage. Ending2: The oil will thicken the grooves between the screw heads and make them easy to remove. Once the screw head is completely free of oil, you can adjust the grip strength. Ending3: This will provide a safe place to position your turn wheel. If you want to secure the screw head to the pulley, work over the area where it is fastened. Ending4: However, if the screw head is bolted to metal, consult with a plumber to ensure that you are not loosening the screw. If you feel pressure coming from the screw head, you must apply penetrating oil.

Answer format: ending1/ending2/ending3/ending4