Originally Posted by howaboutme

Summary of Potential Diagnosis:
1. The high limit is set too low. I believe I have about 2 more 1/2 turns to the right (out) until it will affect the crank arm.
2. KMC chain doesn't work well w/ Ultegra and switch to genuine 105 or Ultegra chain.
3. Chain is worn and do same as #2.