Keeping #35 Chain Tight

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My team is looking at developing a West Coast Drive platform during the off season so we have more knowledge about one before this year's game is released. We pretty much have our CAD finished up but the issue we are running into is figuring out how to keep the chain tight. We thought of making sliding bearing blocks to tighten as the chain loosen but then we realized if each side isn't stretching the same, and we adjust one side, then it may pull to one side. What do you guys do to keep the chain tight? Do you just do the math before hand to get it close enough and just remove links when it stretches too much?