Have you tried the magma RDA? The well iS HUGE! i get almost 39 minutes before needing to redrip.I'm afraid my dry hit, cotton burning issue has won after trying several clones and a multitude of build variation I was batting abot 75%. Too much time wasted with the KLF. I was working with this for NETs exclusively but I think they are worse at isssues with nets than clearos. I've switched to rda. Such I refreshing change I haven't had one bad "build". You can buy premade coils that just slide right in the set screw hole and use cotton pads for wicks, literally takes less than 10 minutes. I think ultimately my problem with the KFL is not being able to build a coil and the terrible struggle I had getting the coil ends to stay under those tiny screw heads without twisting up the coil creating hot spots. Hot spots are really the only explaination for my issues as I tried every possible variation with the wick.
Honestly I am much happier with the rda's and I carry a VTR with an aerotank for work. I still have one KFL filled with Captain Black Dark NET and I'll admit it tastes good but not as good as from my brass monkey RDA.
As per the legs on the kfl, keeping the coil on the post then unscrewing the screw a bit and wrappin the leg around the shaft of the screw then screwing it back in and positioning the coil. Not sure if you tried that technique or not, or maybe you're just done with it, but that's the way ive been doing it and no problems.... yet.