I think the Edge adapter is going to solve a lot of problems. The reason for this happening on the units that I've seen it is unequal pressure on the edge of the backing plate causing it to rub. The Edge 2000 system would mount in the center and be connected directly to the gear. There would be no pressure on the edges to worry about. This kind of thing wouldn't happen with that system. It doesn't happen on all of the Flex units out there either, so it is probably just luck of the draw. Autogeek wouldn't sell them like hotcakes if there were some major defect to them.