Advice, not permission. People not answering the question('is a 105 FD a meaningful upgrade over Sora?') don't count towards a consensus.:roll eyes:

I think I'm just going to go to a different LBS. I dropped off the bike, wrote down what was wrong on the work order...and it still won't shift into the big ring. Other shifts are smoother...but still can't get in the big ring, which is why I brought the bike in.:roll eyes:

The tactile click in the pedals with every pedal revolution is still there, too, despite also being on the work order and letting the shop know I wasn't in any hurry, so just please get everything adjusted like new.

Fortunately, I have free maintenance until the year is over, since I bought the bike at New Year's, so I'm not out any money.