After pushing the front socket into the bracket, I found that the correct pin for that socket was missing. I received 3 pins, two of them are #15.10.472.39 and the other is #15.10.576.39 and I can't return them because I already pressed the socket into the front holder. and fire the old bushing so you can now reuse the bearing pin which is 0.020 smaller OD than the energy mount to give it clearance. 2/ Use the wrong pin and route it with washers. 3/ Make your own pen. I'm just frustrated that the packaging of the parts could go wrong and now it's a headache