I purchased a new Landmaster EV lithium. I have only had the vehicle for 5 days. From nearly the first day, it intermittently would not start, either forward or reverse. After waiting a few minutes, it will go in reverse, but not forward. After a few more minutes, it will go forward. This happened several times over three days, and then it had a bigger problem. It would not go forward at all, and I had to drive it in reverse for 400 feet. About 30 minutes later, it could go forward. I called the dealer and told them to come and get it. Does anyone out there have this model? Are you having similar problems?