Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to assemble a skateboard [title] Keep all your parts organized. [step] You will have a lot of small hardware that comes in your skateboard kit. It's best to keep everything organized so you don't lose any parts or hardware.

Ending1: [substeps] You may want to keep your parts in the box or original packaging until each one is needed. [title] Place your deck down on a flat surface. Ending2: This will also reduce the chance that you lose a piece. [substeps] Look at each piece of your skateboard board's assembly. Ending3: Keep track of all of the parts that are not included in your kit-like the wheels, grips, and handles. [title] Consider adding small wheels to your skateboard frame. Ending4: That way, you don't have to get cluttered and if any parts get lost, you can remove them before taking the board home. [substeps] Always keep everything together so you can easily find them.

Answer format: ending1/ending2/ending3/ending4