get a straight edge and check your frets for level.
If this is the cause, the frets in Q. wcan be ever so lightly filed down. Be sure to also check the neck for weird snakes and bowns. if they are snakey from l to r on the
fret board you can use hot and cold to straighten the neck. its tricky and needs to be done carefully. If you're not well versed in these kinda of things, take it to professional to avoid further damage..
Scott