Hi-a few months ago I purchased a Mini Vivi Nova-S tank and it works beautifully--with the original BDC coils that they came with. Recently I went to re-order the coils (not from this site but from an online store) and they say that the BDC coils have been discontinued and that this tank now needs a BVC Clearomizer replacement coil. We bought them and they are terrible. Is there any way that we can still get the BDC clearomizer replacement coils that were originally with this tank or have you phased those out completely? Would love to order more! These new coils are terrible with this tank!