not sure what to tell you I have 2 kayfun`s 1 clone and 1 real deal, first time used 32g and cotton, found wire was to thin didn`t like the performance. Changed to 30ga and silica and didn`t have a problem works great. I use a mini screwdriver to wrap the coil take it off, heat and compress the coil, then put it back on the sd to aid in placement and ease of attaching to the post, after which slide the sd out after you line your coil over the air hole. Cotton your silica is just personal both work silica is more heat resistant and cotton is easier to replace without doing anything to the coil. Good luck and happy vaping. Once you get it right you`ll love your kayfun they work well.