Product review (5 stars): Totally fixed Cabrio WTW6600SW2
Okay, I was completely skeptical that changing out these springs would fix the unbalanced load issue...but now I'm a believer.  Install took less than 30 min start to finish; watching video online was helpful and leveraging the used springs to pull the new ones through the openings was a brilliant suggestion from other reviewers.  Super happy to have extended the life of our 11 year old machine rather than buying a new one.  (Still angry at Whirlpool for not issuing a recall on the circuit board for the F1 error and having to pay for what was clearly a defective part - but the replacement I bought on Amazon is also still working well).