@davettn Hi and welcome to ECF. Don't worry, when I first started vaping I also did not prime my coils well enough and ended up spoiling my first two stock coil heads. Just follow the instructions, as above, and apply a few drops of juice on the coil, fill up your tank and leave it alone for about 5-10mins. All you're doing here is giving it time for the cotton to absorb more juice. Glad to have you here.