Ive been using a cleito 120 for over a year now and have been burning through coil heads. Ive run hundreds of different juices and flavors through it and my juice always seems to start turning brown within a few fillups. I cant stand the flavor from gunked coils so I find myself changing them often. Is it possible to clean the gunk and reuse coils? Ive seen a method where you can run water through them but I'm hesitant to how effective that would be. I also heard water pressure can seperate the cotton and cause leaks. The other method would be soaking the coil in a water/solvent solution. People apparently use vodka or isopropyl. I have some 90% iso but im concerned that even leaving it out to dry overnight could result in a strange alcohol tast on that first inhale. Does anyone have any experience with cleaning coils?