So I am fairly new to vaping and I have ordered a Kangertech Subox Mini for my first box mod I ordered a good set of 18650 rechargeable battery's but then battery's that people say it needs is flat top but mine have bumps they will ship in about two day I could probably get a refund but I don't feel like waiting another month so am I S.O.L or does anybody have any ideas on what I could do? I'm open to any suggestions.