I removed cabinet per online instruction and found that one of the tub suspension pads was missing with no sign of it ever being there and some metal on metal wear present and other pads were fine. I ordered and installed a pad and also ordered a set of suspension springs and installed them too. I compared old springs to new and found they had lost tension. Machine runs quiet even spinning now. Amazing such a simple fix can eliminate balance problems and noise/vibration and rattling when spinning. BTW, I got machine used from my daughter who was moving and decided to repair and use it, while I inspect and either repair my old HD Kenmore or buy a new one. Runs like new.