I'm shooting a Drenalin and still on my original string. I need to replace my center serving & this is where I need some help. I'm using .025 serving and shooting easton H nocks. When I removed the original serving they had a strand of serving material running under the wraps. I tried the regular way & nock is to loose. I've served before but never like this before. Can someone explain how this is done? Thanks!:shade: