I use a 10 knot to tie my peeps(actually a little different but same principle,It moves up and down when tiedin) so I can move them whenever I want and if the peep doesn'tturn properly,I will jump a strand across from 1 side to the other to get it where it needs to be.Good quality strings will stay once set. If that doesn't work,sometimes you can rotate the string a half turn to get the peep where it needs to be.