Originally Posted by
jackb
I changed the chain on my 2018 Domane SL 5 disc with 105 components. I installed an Ultegra chain. Now the chain makes noise and back pedaling is noisy and not smooth. Are the 105 comoponents not compatible with the Ultegra chain?
Are you sure you threaded the chain on the correct side of the retention tab on the pivot arm of the rear derailleur?