Making adjustments to your bike yourself is a great idea if you know what to do and why you are making those adjustments. Not all of us (myself included) are lucky enough to have that skill. The only problem that I see in attempting your own fitting, when you don't know that much about it, is that while you are trying different adjustments, you are still in pain; and that makes absolutely no sense. On that note, I would definitely suggest a professional fitting. If there is a shop near you that offers the Retul system, I would strongly suggest that you look into it. If not, check out what the other shops offer and go with the one that you think is going to give you the best fit service. In any case, a fitting by someone that knows what to do will certainly help keep you from riding in pain. Just my 2¢ worth.