Cheers to my LBS! After countless hours of tinkering, tightening, loosening, etc. I couldn't get the HS tightened. Took it down to the LBS, mechanic loosened then tightened and within 30 sec. voila! it was fixed. What did he do differently? Absolutely nothing...but I'm convinced that there's magic in a pro mechanics fingers!
Something to keep in mind for all us amateurs.