|Somebody didn 't get some BB love|
Joe and the shop go back about a decade. He had purchased a bike from another shop and they could never get the shifting to be dialed in. He brought it into us to see if there was anything we could do. He was frustrated to the point that he was willing to get a new group, if we could make his shit work. A coworker took a look at it. Noticed that the shifter only had 8 clicks when it should have had 9. Disassembled the shifter and moved the plate to make it the right amount of speeds. Shifting worked perfectly.
Joe has come back ever since. And he lives 5 hours away. He dropped his bike off again. He had just had it tuned elsewhere as he couldn't get down to us and needed it to be working. The rear derailleur was ghost shifting.