Already the rear derailleur needs adjustment, as it won't shift into the low gears. Unfortunately, the flathead and phillips heads on the allen wrench set he sold me don't actually fit the screws on the device. And the owner's manual doesn't detail the adjustments each screw makes. Time to do some digging on the internet. Wish I knew where I had put my leatherman with every implement known to man. It's somewhere in the apartment.