Replaced the damper control. It took only 10-15 minutes. Since replacement, the clicking noise has stopped. Very happy with the result.
However, want to share that there was probably nothing wrong with the original damper other than the original faulty design. The flap opens and closes and believe the clicking noise was the result of plastic against plastic. Noticed the new damper control is exactly the same as the original except that one of the flap sides now has a thick piece of rubbery foam so not longer plastic hits plastic. If I had known, l could have saved $71 dollars because believe it could had been a very easy fix to duplicate new design.
Repair experience was good but somehow feel cheated knowing all along the maker knew how to fix the problem and they could have provided a much cheaper solution.