I am currently in the process of buying a touring bike. i found one that i really like but the man at the store keeps trying to lead me away from it because it has disc brakes. I am going to bike across country next summer and he thinks that if i have any problems with the brakes i will be SOL. so my question is this, is it possible to fix disc brakes and if so please explain how!! i know very little so the more explaination you can give the better. Thanks