Was the products functioning as intended at first, or did you come upon any unexpected challenges, such as the 'popping' issue you described?​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​�