Welcome to the bike tech lottery. Ride the bike and something will happen, then you'll learn to deal with it. Odds are it'll be something gear cable related, but you never know what's around the corner until you turn it.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.