I have two calls that need sound boards. One is a 3.25" paduk pot with black aluminum for a surface. I did have a cherry sb in it and the call was dead. The other is a 3.5" cherry pot with crystal for a surface. I had acrylic in it and it did not sound good either. I am thinking both sound boards were too light to make a good sound. What would you put in them? I am open to anything.