check the bearings again by having any of the 3 drum paddles at 12oc position, then gently apply thumb pressure upwards on the nearest edge to you, you need to be able to determine the difference between drum movement from total , tub assy. movement . also look around the pulley wheel for rusty stains, if you think everything is in order make sure the machine is dead steady on the floor,also check the concrete weights for tightness, rarely have I seen the shocks worn.
keymatic irl.
July 2013