Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to level a mobile home [title] Remove the skirting (optional on some) from around your home to gain access to the piers on which the supports sit. [title] Begin at the middle of your mobile home to check the level at each pier. [title] Place a long level at the nearest pier to the center and check the bubble in the center of the level; if it is centered, the area is level.

Ending1: [substeps] If the bubble is not centered, it means the pier is not level. [title] Level the pier by clicking the drill mander button on the upper-left edge of the screen. Ending2: [title] Mark any piers that are not level and proceed to the next steps. [title] Attach a plastic tube to a bucket or other container with a capacity of about 5 gallons (19 l). Ending3: [title] Identify the places where the piers cross (or be parallel with them if they cross each other). [step] And mark each pier using a pencil and compass. Ending4: [step] The bubble will dissipate into the water as it goes down, making the container level. The bubble should have a light bulb at its base and a pipe at its bottom.

Answer format: ending1/ending2/ending3/ending4