I recently swapped everything over to my 2009 carbon kuota kharma frame from my “2007 alloy cannondale synapse”, IT'S ALL ULTEGRA 10 SPEED GROUPO. I’m now getting chain skip, (one tooth each skip) and it happens when I put down the hammer. The only thing I’ve done is I didn’t use a shimano “master link pin”, instead I bought this: “wipperman connex connector link”.

1. Direction of chain - (CHECKED AND CORRECT)
2. Direction of Wipperman master link
3. Check for stiff/kinked links
4. Check for a bent tooth
5. Also turn the crank CCW will most likely identify stiff link more readily.

Thanks for the help guys!!
Marty