Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install a tub drain [title] Assemble the overflow pipe. [step] The drain-waste-overflow pipe assembly must be positioned correctly. Place the rubber gasket on top of the waste overflow, which is the top opening of the pipe.

Ending1: This is the designated overflow pipe for the tub. [substeps] Do not install overflow pipe in the center of the tub. Ending2: You are replacing the leaky overflow-waste flows out of the pipe into the plug pipe as the radiator gets warmed. Replace the radiator cap once you've fit it on, which should cover the drain. Ending3: [title] Place the drain pipe inside the overflow pipe and tighten at this knot for safety and seam control. [title] Screw on the old belt and remove the level. Ending4: Align the drain tailpiece at the bottom of the pipe with the tub drain hole. [title] Apply plumber's putty around the bottom part of the drain flange.

Answer format: ending1/ending2/ending3/ending4