I see that a lot of people like these alot. I had one and sold it for about half of what I paid for it. I had a problem with my Toro's front wheels comming off the ground when I started up a slight slope. This was on the 37 walk-behind. I was weighing arround 225 at that time. Was there something I was doing wrong? I am planning on purchasing a two-wheel velki, unless the slide will do . I do not know if weights were supposed to be with unit or they were designed strictly for lighter people. Any feedback you can give me will be appreciated. Thank you.