What are the drawbacks of using a velky or sulky on a walk behind that is beltdrivin? I was told at first that anyone under 180 lbs should be ok. However that a hydro would pull virtually anyone. I'm not that heavy but they are saying that my first transmission went out because belt drives are not meant to pull velkys ( after the fact). Cost me $500. At least I got 2 years out of it. But it's only been 2 months and it's already barely moving!!!