I have my Stratocaster fitted with Texas Specials... I've noticed there are times where the high strings during a solo just don't seem to have the output when I need it. Is it the string, the pickups, or just the way I'm playing? It seems that I had this problem before but never seems to bother me that much, until every now and then, when its time to solo, the high strings have lower volume... Any advice on what I should do?