I just received a new road bike that I bought online (no lectures please!). Overall I am very pleased with the bike, but the rear hub was making a strange squeal from the get go, but I thought it would break in and go away. I have put about 60 miles on it and it has not gone away and the wheel does not turn for very long when you spin it. I took it off and tried turning the axle by hand it and there was a lot of resistance. I figured that it was overtightened, so I undid the lock nut and backed off on the cone nut and retightened. It is better, but still not great. Could I have damaged the bearings that quickly?