Product review (3 stars): The design is poor and the plastic cracks with just regular usage of ...
I can't tell you how many of these things I've replaced. The design is poor and the plastic cracks with just regular usage of changing settings and starting my washer and dryer. There's nothing keeping the plastic back from cracking, it's got no support. This time I got a tip that I wanted to share. Get some epoxy putty, mix it up, and fill in the empty space on the backside of the knob, fill it all the way to the tip of the part that connects to the washer or dryer. Let it dry and then put it on. The epoxy (they say) doesn't give the plastic any room to give or break.