So the guy at my LBS tells my wife the reason her drivetrain has been making so much noise (a regular low-pitched "click" every revolution) lately is because she's got a quick-disconnect link (Wipperman or Connex, I dunno) on an Ultegra chain, and that the new Ultegra (presumably he means 6700?) chains aren't compatible with these links.
Whiskey Tango Foxtrot?
She's had that link for 8 or 9 months with no problems. Moreover, *I've* had the same link on an Ultegra 6700 chain for ~3,000 miles and had no problems. (Note to self: I'm probably overdue for a new chain.)
Was this guy making stuff up, or is there some truth to this?