I have an Ikea MBI

Question

I have an Ikea MBI 710 S Microwave. For the first year it was quiet, but it is now very noisy. When the microwave function is used there is a loud buzzing. The whirlpool engineer has diagnosed this problem as the magnatomitor causing the thin metal sheet of the case to reverberate. The engineer said he may be able to provide a special material that may stop this from happening without compromising safety or functionality of the unit.