It sounds like you are using a endless loop string. You can have the gap when you use string silencers in a endless loop. A couple options you have are to put a slight twist in the string, or you can use some nylon serving material and tie the Musk Ox string silencers in place, this wont completely close the gap, but should help a lot. The string used in the YouTube video is a Flemish Twist string which works better for using string silencers.
Answered on 10/12/2010 by Johnathan Karch from 3Rivers Archery