We are having trouble with a lot of boards. We are seeing excessive voids like the ones on page 18 of this presentation. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwj27JnJ38HYAhUF5YMKHWYICvcQFggpMAA&url=https%3A%2F%2Fwww.eptac.com%2Fwp-content%2Fuploads%2F2012%2F06%2Feptac_07_18_12.pdf&usg=AOvVaw2OX6J_YRqkuNUNNgDBvmwZ The vias are filled and plated. Anyone seen this, resolved it? Guy