Product review (5 stars): Fixed Cabrio Top Load Washer Balance Issues
Worked perfectly for our Whirlpool Cabrio top loading washing machine. We have a family of five and after about 6 years the washing machine was getting out of balance very frequently. Replacing the rods is pretty easy since you don't have to remove the basket.  The old rods didn't look too bad but I believe that the springs on the rods get fatigued over time causing the balance issues.
It's a lot cheaper to buy and replace these yourself rather than paying a repair man hundreds of dollars.