I asked one question and it took a couple of days then several answers came in. They screen the questions apparently then post it - therefore there is a delay. I ran mine in grass - does perfectly fine. Some waterseal the electronics and have taken it through some pretty tough terrain. There are several videos out there. I don't plan to mess around much more with mine though and plan to tear it apart to lube spots they mentioned and such. Where did you get yours from? You say it was used?