I have a limitless i-joy rta. I'm having trouble with hot spots. I make sure my new build is firing evenly b4 I wick it and it does ok at first. By the 2nd day I'm strumming my coils every 5th puff. I checked the screws, they are tight ,the coil looks perfect. Right now I've got 26g with 7 wraps with my 35 coil master dowell. It was happening even more with 28/32 clapton coils too. Is there a way to avoid this?