I understand how awful that horrible taste is. I had it too, really bad. Try increasing your PPI dosage to 60 or even 80 mg/day, or try switching PPI's until you find one that can control the taste. There are also meds called prokenetics that help tighten the LES and hopefully reduce the amount that you're refluxing. Speak with your doctor. You shouldn't have to deal with something so disturbing.