How do I reset the difficulty for an instrument path?

In RockSmith 2014, I started by playing bass for a few days. The game quickly adapted to my skill level, becoming challenging but not frustrating. Then I switched to the lead guitar path, and was surprised to see a slew of unfamiliar chords thrown at me right off the bat. Apparently the game assumes that I must be as good with a six-string as I am with a bass!

Is there some way to tell the game to ease up a bit, short of deleting my profile entirely? I know that I can adjust the difficulty of individual songs via Riff Repeater, but doing that for every song would be tedious.

Solution 1:

At the moment, you cannot do this except for every single song with the riff repeater.