Sorry for the delay in replying, I only just came online and saw your question. Are you still looking for help with this?
Please don't rate my answer until we have explored all possible avenues. Please just use the reply button to contact me.
This may just be that the cabinet is not level.
Use a spirit level left to right and front to back, and adjust it accordingly.
Retry the machine.
If its still not good, please let me have the model number
The machine is at a relatives house in Dorrigo,it will be a couple of weeks before I am back there to get the model No. I have tried the spirit level and believe I have it level, it has been spinning perfectly for the last 7 yrs. then out of the blue this gigantic shuddering when it reaches full speed spin, it actually bounces all around the room. Leaning on it with some force stops the movement, but it still vibrates. I wondered if a part might have failed which would cause this. Thanks Rob.
I wont be able to get back to you for a couple of weeks.