I just got my new John Deere 657 Quick Track today. I have been mowing with a Walker for that past year and got so tired of unclogging the chute and the hassle of the huge bagger on the back. I only used the 657 for about an hour today and it is awesome. The only thing I noticed with it is that it doesn't like to reverse very much. I mowed a pritty steep yard with it today but even on flat ground it i just pull back on the handle to reverse the tire just spins. If i pull back on both handl it will reverse just fine but when trying to reverse with just one the tire just spins. Has anyone else had this problem with a Quicktrack or a Super surfer.