Product review (5 stars): Prior to this product, mywasher could not spin for ...
Prior to this product, mywasher could not spin for more than a minute.  Since the install of this product several months ago, the washer has worked quietly and efficiently.  No more unbalanced loads.

Pros:  cheaper than a technician. fixed my unbalanced problem.  Installed all rods in 15 minutes
Cons:  I needed to get a friend to help me with the installation.  It can be a tight fit and having someone hold the barrel to the side while you install it made things so much easier.  I suspect I could have done it on my own, but I think it would have been a little bit more difficult.