I was re wicking these coils for the last couple of weeks, normally I do fairly well at things of this nature, but for some reason my coils started out ok but then after a few hits, or after sitting for a couple hours I kept getting burnt hits. I tried everything, less cotton, more cotton, total rebuilds, and I was still getting bunt hits. Finally just before I was ready to pull my hair out, I realized I was leaving my cotton out on each side,(I'd seen Rip Trippers do it that way), but I decided to try pushing the cotton inside, so they looked just like the original coil, and BINGO!!!! Never a dry hit since.