@ski6jones The newer D3's have an extra set of front inserts now, not sure when they started adding them. The Ion I bought last year had them. When I ordered my new Denali a few weeks ago I asked if they could add the front inserts in the same place as D3 and they happily bult them in when they made the ski for me. I am very happy with my MOB double boot system as I feel it is the safest system made. It has never pre-released and has released a few times when needed, one of which I feel would have been a serios injury with any other system. Since I had a total knee replacement over the winter I am particularly cautious now. Since I started using my MOB system three years ago a couple friends who come to my lake to ski with me have also switched over and are also very happy with the system. One uses double boots and the other uses rtp. We are all using the Radar boots with them. I am the only one with last years boots, my friends have both purchased the new Radar's. If you don't have the front inserts in your ski and don't want to add some, double stick tape works fine, with the only downside being that it is a pain to make binding adjustments. I totally agree that you do not want to use MOB without the extra front inserts or double stick tape.