High effort needed to downshift chainring
My Ultegra brifter requires a lot of effort to shift down from the large chainring and clanks when it finally shifts. This came on suddenly, during a ride, prior to which it had been shifting smoothly, with light effort. I tried loosening the upper limit screw, thinking that perhaps there was too much tension on the cable when trying to downshift, but that seems to have little to no effect. Next step is to take it to LBS for an expert to fix. Any suggestions before I do that?