Hello HM ,
if it is the electric motor that has gone wobbly , it could be the windings that actually make the motor. These can be re-wound !!! if the machine would be very costly to replace , it could work out cheaper to get it re wound than buy new ? Bearings can also be replaced if it is a bearing ? An example : someone I know got an old electric generator given him . The windings were burnt out !! as was the bearing on the spindle . A new alternator would have cost nearly £600 , rewinding and bearing cost £90 !!!!It worked perfectly . So electric motors are rarely beyond saving (except really cheap ones), and may work out cheaper to repair than replace ?
Worth looking into maybe?
cheers
Russ