Konfyouzd
Return of the Dread-I
Is the 7th string a great deal looser than the others? You may need to just raise your action slightly on the 7th string or get a high gauge for the string so that it doesn't move around so much. I am having a similar problem on a 7 of mine and I think the issue might be that the string I'm using for the 7th string is simply too light a gauge when coupled with how hard I pick.