I pulled my ZM 25 apart today. I have a front silver in the front and a gold and bronze in the rear. I tried pulling the silver in front and put back in the bronze in the rear. To short of the hard stop. So I put the silver back in and pulled the bronze from the rear. So my final look is 1 silver in front and a bronze,gold in rear. I'm still playing to see if I can improve the right side more. It does look better but I'm stubborn as hell. I won't give up . Lol