Product review (2 stars): I thought it was a great improvement and that the nylon strings would last longer
I have replaced this part 3 times.  When the new "improved " part came with an additional roller on the top where previously there was a stationary pulley, I thought it was a great improvement and that the nylon strings would last longer.  What I found out was that the pulley created a extremely loud spring noise no matter how much I adjusted or lubed the parts.  I just sent for a new kit and I am going to try putting a screw in the top pulley to make it stationary and see if it duplicates the old part by having a stationary pulley on the top, to see if the noise goes away.  I would rather replace the strings every 3-4 years than hear the noise when I open & close the DW door.....