a couple of things I found. It wasn't quite high enough to stop the tube from rubbing on the glass. a couple of prints had movement that caused the glass lid to want to slide backwards with the AMS on top. lastly, I had printed a couple of tray holders that used to fit between the glass edge and printer to hang. The Riser is such a perfect fit that the gaps have been eliminated to allow the hanging of the boxes. I really like the minimalistic design of the riser though and still recommend it