I think OP might be the same guy who posted an identical question on MTF last week. I actually suggested looking for a center bolt like this and try to tighten it. IDK what happened to him but Im guessing that did not work.
http://www.ebay.com/itm/Cub-Cadet-Se...item4d2035e768
Zoom in and you can sort see this guys wavy-ness between the levers and the housing. These are quite worn though.