Machine shook - caused wooden base to "walk".

Removed two screws at base on front and dropped cover.Recognized broken shock absorbers as problem or possible result of more critical problem.Removed broken shocks (obstinate pins:use proper open end wrench to engage pin beneath head and drive wrench handle to pull pin. Of course, at same time, push in lock on pin's point to release)and ordered part number.Installed new shocks.Plastic pins were originally "top" toward rear, but shocks could be rotated so pins would engage bushings properly with "top" toward rear or facing front (bushings have a "stop" opposite side pin is driven in).I rotated the shock "heads" and "shafts" as I saw fit for easiest installation (some pins head forward, others head back).One shock had a head location that made it difficult to push through the hole. I located a "service" hole in the back of washer almost directly opposite this head.Used wooden dowel (maybe 20 inches)through hole in back and hammer to drive pin in place.Liquid hand soap seemed okay lubricant for all pins.