I too am suffering from a loud banging noise (heavier loads) which recently started. This unit is 5 yrs old and has been a source of vibrating noises for some time. Until the other evening when it sounded like a helicopter was landing in the laundry room. If we lighten up the load its not so bad. After reviewing/reading others issues the common problems seems to be shocks, springs and the basket bearing.
Question, how do you know/inspect the shocks. Mine aren't broken, there doesn't appear to be any excessive amount of grease at the base. So, what do you look for? Based on my automotive/shock experience the design is primative i.e. a shaft in a tube with little absorbing properties.
Finally, the basket rear bearing, other than high spinning is there any other diagnosis? I do feel a bit of out of roundness of the drum driver pulley while spinning. Thanks for you input.