Hello!   I'm having some troubles on my guitar, I started having some weird fret buzz only on the D string, and only on the 5th fret but the buzz is coming from the nut. If I fret the 5th and gently press the string behind the nut, the buzz almost goes off (sometimes it goes off for like 15 minutes when I release it). I did check for maybe a widening of the nut (plastic) and it seems like a little wider than the string but it doesn't buzz when played open. Any suggestions?   Thanks!   EDIT: D st

So i have a problem with my Stratocaster,you can hear it in the video(hope you can and it's not bad),the Low E and A string is buzzing in the open notes.I even tighted the neck,and the problem is still.Can anyone give me a guide to solve this problem?I think the main problem is with the nut,because if only 2 string is buzzing then the problem is not with the neck,but i'm not sure about it!       http://www.filedropper.com/mov0015