Just exchanged a GE Profile PDWT480V00SS for this next model up and am having trouble attaching the sound panel (plastic piece with foam) to the dishwasher, it doesn't seem to line up. Had a GE tech out today and he said this piece isn't needed...that it's for dishwashers under higher counters and just screwed on the silver colored toe kick. We didn't have any problem installing the foam piece on the 480 model. Can someone please verify if this information is correct? I'm having a feeling the repairman just didn't want to deal with the issue. Thanks...