The right side is the short adjustable inexpensive side. Just replace the end piece. While it's loose I would check for play on the long piece. If need be, apply some pressure to the tapered bolt while removing the nut. It's not a complicated job. To readjust, just measure between leading edge of rims to trailing edge of rims. If I thought my tires weren't wearing good, I'd readjust, but that's never happened.