Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to install handlebar risers on your snowmobile [title] Stand on your machine and determine how high you want the bars to be. [title] Remove the bar padding, exposing the factory bars and mounts. [title] Loosen and remove the factory bolts.

Ending1: [step] For the above steps, lift the cinder block off the ground using a ratchet or pulley. [title] Apply pressure to the bar to loosen the clamps. Ending2: [step] There should be four bolts on top and four on the bottom. [title] Look at the brake, throttle, and oil cables. Ending3: [title] Rotate the bars clockwise to complete the installation, then press the pvc bolt down to release the bar. [title] Remove the ski and scrape off pvc. Ending4: [title] Remove the rear packing bottom panel and remove the canopy for the fuel pan. [step] Lift the original frame frame to expose the fuel pan, switch for the fuel holder, the fuel tank, satellite plates and the rivets.

Answer format: ending1/ending2/ending3/ending4