To be honest mate this subject has had a lot of coverage just lately. Just read some previous posts and get a better idea of your fault. You haven't gave much info out about your particular fault. You say you have read rhe tut but never told us whether you had the correct xoltages or not.
Try a search for stuck in tune and you will find a lot of suggestions to try. If you have no joy, then repost, saying what you have tried and then someone I'm sure will be able to help you.