Definatly go to a shop and have them center your rest, if you shot those arrows from the same location they are really kicking. After they set the rest...don't move it unless you paper tune. If you decide to shoot through paper don't move the rest, just the sights from then on out. There are some really good books out there that can help you...I have one that is A Bowhunters Guide to Accuracy, another called Setting Up the Perfect Hunting bow...for about 15 bucks off amazon or a bookstore they will really help you shoot and understand your bow better.