Hi,Welcome to Just Answer, My name is XXXXX XXXXX forward to helping you today. lets get started.
first thing to check is the dampers. these are on the top of the tub and stop this from swinging back and forth.there are two clips you push up with a putty knife between the top and the front panel, # XXXXX on this diagram, once you release the clips the front panel will come off. make sure the dampers are not broken.the dampers are # XXXXX
I checked the dampers. They are okay. What next?
The outer tub, the plaster portion, rotates about 5 degrees, back and forth, as the inter portion agitates. There are two metal brackets under the motor assembly that are perpendicular to the metal base/floor of the unit. There are ridges on the metal base/floor. The metal brackets under the motor assembly cross over and scrape the ridges on the base as the machine agitates. I can see metal filings on the floor of the unit where the brackets have scraped.