It sounds like you have no local bike shop near your home? Or are you simply loathe to take it to a shop that will cost you some extra $$$$ for a tune-up? Whatever the case, you were probably led to believe that the Internet is a real virtual bargain bike shop where in reality, unless you purchased the bike from a store-be it bricks & motar or online- there it is checked out beforeyou received it, you are stuck with it. Do you have a friend, bike group, or even a shop nearby for you to consult? Or even better yet, try to contact the Internet store where you bought the bike. Perhaps they might take it back and fix it, offer to send you another bike, or even a refund if need be. You might be suprised at the response you get-in your favor I hope.