Last night, on this forum, I saw an old post from a guy (can't find it now) who had similar problem, and solved it by tightening the 2 bolts holding the small bar on the aft side of the K member. Sounded too easy to be true, BUT IT WORKED!!!! 30 second job solved a clunk I have lived with for 2 YEARS!!!
Thank you, Stangnet!
CW