Hi, have been researching mooncups all day and really want to give it a go. I had all but ordered it when I started to research the archived threads and found stories of sucking out coils by mooncups....slight panic starting to form! Any advice out there? I have a copper coil and have had for about 2 years and the old AF is pretty hedious each month- the mooncup sounds ideal apart from the thought of vacuming the coil out