First morning of the 7 day Maxxis Diamond ride I was braking for a junction and the screen rotated about the top pivots. Bottom pivots has gone AWOL. Clearly one of the bottom pivots had been missing for sometime and it was only when the second fell out that the screen could rotate. This is probably a freek occurrence but it takes a few seconds to check so suggest you have a look. Temporary fix was two 6mm set screws and nylok nuts until I can visit dealer tomorrow. Screen has a MRA Tour blade fitted which does increase pressure and vibration but load on pivot is a sheer force, so not sure why this happened.