Product review (5 stars): Great kit! Easy to install!  Problem solved!
I agree with a past reviewer that Whirlpool should be AT LEAST providing the replacement kit at no charge - this is a major issue and is a definite design-flaw.

However, reviewing just the part - wow it's great!  It took me about 30 minutes (after studying instructional videos on youtube) and now my ice door is working beautifully once again!

The instructions, while a little vague, are understandable if you watch the videos on youtube.  Whomever designed this retrofit kit deserves a high-five....or several high fives.  Maybe even a beer. :)