You have a 11 year old RV. The odds are ALL the linkages need Liquid wrench spray. Take the cotter key out of the extend/retract shaft and pull the pin. A CORRECTLY loose step, you can push to retract with 1 finger all the way, when you let go, it should fall down open quickly. The easiest way to get the lube to penetrate is to take it loose like I described, spray all the linkages and then manually force the step closed and open until the lube penetrates the linkages and then falls open and closes with that one finger. Then reinstall the linkage and pin and cotter pin. Doug