Hi, I am trying to repair a 18 inch subwoofer. My goal it to remove and reuse the spider and cone/voicecoil. What is the best way to remove the spider from the frame without destroying it? It is next to impossible to geet any xacto knife to it, so it needs to be chemically debonded I assume. What is a recommended chemical to soften or debond the ca glue used to attach the spider to the frame? Thanks!