If your time is of monetary value you may want to contact a Kubota dealer about trading your Zero to a Kubota F2680 (F3080 if you need 4wd). If your zero worked you probably don't need a 4wd. The F models are the ultimate mower that has a steering wheel and service is very accessable.I had a boating accident and the shoulder is giving me fits on the zero turn. Tractor rides a bit better and can turn it with one arm. Also have a garden. It will add a hour or 2 on the cut time. The zd is a grass cutting machine.