Product review (5 stars): Great parts + YouTube Video = Easy task!
One the left side upper arm adjuster one wheel retainer broke off.  So one wheel popped off and the left side of the top rack hung at angle.
I was able to pop that wheel back on and slide all three back into the track on the left side.  Of course this was just a temporary fix.  I checked various other appliance parts dealers and most of them did not appear to be using this redesign.  Also, the prices were higher and had added shipping costs.  The other reviews are on the mark about the instructions.  The provided instructions assume that you have already removed the existing adjuster arms.  But the YouTube video mentioned in the reviews starts with the removal of the upper rack from the dishwasher and then the upper arms. The video provides detailed step by step instructions on how to install the new adjuster arms.  After an hour or so the job was finished and the upper rack was back in the dishwasher.  I could not be happier with this kit.