Decided to try this trick used to soundproof cars for the fraction of the cost of Dynamat. $17 for the 25x6 roll of U-seal waterproof repair tape at Home Depot. It really works to keep sheetmetal from drumming and its easy to cut. I lined the inside of the front service panel, rear panel, rear of the console, inside to top cover and the drum. Next, I'll line the cabinet of by Kenmore DD because this was so easy and effective.
