Top sash 18-193 started breaking after installation

A quick learner from Co says:
I have purchased 8 sets of 18-193 sash guide and after installation, they all broke after opening and closing the window for two times.
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Bob from SWISCO responded:

Thanks for posting. Sorry to hear about your trouble with the 18-193. Let's run through the possibilities here. 

  • One, did they match your original Top Sash Guide? Can we see a picture of the originals, if you still have them, to be safe? 
  • Two, if you haven't already, view the installation video below to ensure the top sash guides were installed correctly. 
  • Finally, may we see pictures of the damaged top sash guides? In the event that there was any issue with how they were manufactured, how they were damaged my lend a clue. Thanks.
18-193 : Top Sash Guide Set
Top Sash Guide Set
How to Repair a Jammed Window
How to Repair a Jammed Window
How to Replace a Top Sash Guide [1080p]
How to Replace a Top Sash Guide [1080p]
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