My corners are fine. I really don't need to move them. I thought that my tweeters and mid range sounded a little muttled. So.. I contacted Klipsch and bought these upgrade kits....Remember, mine were built in 1980, woofers/bass drivers were replaced in 1997...so original tweeters and mid range...they still rock as my carver amp seems to still like rock...like I first said, I thought they were sounding muddled...maybe not...however, I have 2 upgrade kits to make my Klipschorns from 1980 meet the standards of what Klipsch says is AK-5 standards till 2001. So.....anybody done this?