I dont think they make coils that small, those are for spark plugs, start with re tapping it, you can do this yourself by just buying the tool, all a taper is doing is re shaping the threads, if that doesnt work then if you buy a fancy enough tool it will come with a thread remover tool and then u can remove the threads and re tap with slightly bigger threads, of coarse with that you would haft to use a slightly bigger screw. Good luck