So about a month ago, I purchased a new Markbass Little Mark III head. I love it to death, but there seems to be one problem... I play a 90s MIM Fender J through it, and if the pickups and tone knob are turned up past about 5, the clip LED on my amp starts going off anytime I play anything on the E string, and on certain other notes as well. First question: why might this be happening? Second question: how do I fix it? Thanks in advance for any suggestions and/or information.