Have any of you folks who own or have owned an EBS BassIQ, messed w/the hi frequency adjustment inside the the case? I owned one a few years ago and could not get a usable tone out of it. I recently bought another one to give it a second try and this time around I opened it up and cranked the hi freq, adj. up to full, and I have gotten great results. The pedal that seemed dull and lifeless the first time around, was bright and full of life this time. And w/no loss of low end. Has any one else tried altering the hi's on their IQ?