I have been happy with the board and Jay has worked hard to provide excellent customer service but I was having issues with the board automatically adjusting its htz (speed) up and down on its own when It was NOT in an auto adjust mode. After Jay happily replaced the control unit, remote and even sent me a new board, I finally think I have found the issue. I use a universal remote in my family room where I use the board. I am fairly confident that if I use that remote while on the board it messes with the Vibration Board causing it to have a mind of its own. I think perhaps both remotes work on a similar frequency.
If it were not for this issue I would have given them 5 Stars!!!