Which contacts do you have in the grand, new style sub ohm contacts are gold in color. If you don't have gold contacts, you shouldn't have
coils that low.
Make sure your atomizer is seated all the way and making good contact with the 510.
Make sure all the post screws haven't backed off the coils.
Umm, check the firing pin when you press the button, pull the door off and make sure the firing pin isn't arching when it makes contact on the positive battery contact. If it's arching, apply a dab of noalox or deoxit gold to the firing pin and spring. You can also apply a little to the battery contacts.
Make sure your button isn't locked preventing you from pressing it down to make contact. If it's locked, rotate it counter clockwise to unlock.
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