So a couple of weeks ago i decided since i barely use my B string, i decided to get a 7 string set for my 6 string set and tune it EADGCF, but now i got bad rattle on most of my strings. I Suspect it's a nut issue because its used to the BEADGC i used for around a year or so. However if i were to get a new nut, it wouldn't be much different because all the 6 string nuts are for BEADGC and it would be a waste. Should i maybe bring to someone to have the existing nut filled? or should i just try and get a new nut for my new tuning anyways?