@Marty Backe
I have seen my video thousand times in slow mow. I cannot upload the video for to see it. I am sorry. But in slow speed you see and here the wheels shaking forth and back. Very scary at high speed. I have taken a belt through the wheel and went outside to make a video. If i have the new board i will test it like this again. I have the oscillation even at low speed over curbs. At this was my luck if not i will have injuries at higher speed.