Just got aspire bdc Pyrex tank, supposed to not leak or gurgle but it's doing both, coils only last 2 days max, I hear of other people having theirs last for weeks or months, that may be the juice, tasty vapor Cafe macchiatto (sp?) 30% vg with sweetener. I love that flavor vaping it for over a year, don't know what to vape otherwise. Any clues would help.