I'm fairly mechanically inclined, but am new to bike mechanics.
I have a month old hybrid, X5 RD, and recently swapped tires on the rims. Wheels were re-installed properly as far as I can see (pulled and did a second time), but I now have a chain chattering noise at the rear cassette (9 speed) on the three largest rings. Particularly third gear. The chatter occurs on those gears no matter what ring I'm on with the FD, so I assume it's some adjustment I need to do to the RD.
I flip the bike and go through the gears, and it changes throughout the cassette without issue. It just now chatters on the three tallest rings, particularly third, which is the worst.
Any idea what I should adjust to try to quiet this chattering sound?
Thanks in advance!