I was not able to watch him do it. I had to drop the bow and leave it with him one day while I was at work. When I picked it up he showed me what he did but I am afraid I cannot accurately tell you how he did it since I did not watch him do it!! I am a hands on kind of guy. Sorry!! I am going back to the bow shop sometime tommorrow and I will try to get more info on how he did it and I will repost that way I don't tell you wrong. All I know is that it fixed the problem. I will repost as soon as I get the details.