Product review (5 stars): Kitchen Aid Dishwasher cheap plastic part repair.
Same as above:  replaced excellent but 25 year old kitchen aid dishwasher with new kitchen aid and very very disappointed with it.  Replaced the top rack assembly arms twice, the second time with semi metal replacement parts, and now the chopper assembly.  Even if not broke, I see that part needs regular maintenance as it traps debris; something my old one did not do and worked fine.  Also, I see that no matter what brand, they are all similar in design.  At least they simplified the inside to the point of being able to fix-it-yourself, but who has time?  And I don't see buying a new one to be the answer, it will only last 1-2 years until the cheap plastic parts wear out on that one.  Thank god for you tube and the wonderful people that share the information on how to do this procedure!