I just got my Rover and am having a problem with my seat moving. I have a half inch difference in my legs and I think I shift in the seat to reach the right pedal. The dealer has adjusted the seat and tightened twice. But they said if I push on pedals to stay in sit properly seat may move and there would be no way to tighten it enough.Has anyone else had a problem with the seat moving? If so any suggestions would be appreciated.