So I’m stripping the chassis of an old VH140c so i can sand blast and powdercoat it. I’m removing all the electronics and I’m wondering what is this white stuff under the black square component? It’s still liquid (not hard) and has plastic/chalk smell to it. What is it’s purpose? Insulation? When i put the amp back together i want to use the same stuff so i don’t screw anything up lol. Thanks for your time!