i asked the folks at Nhaler how to clean their low resistance atties, mine is all gunky inside. they said grain alcohol. all i could find is 99%isopropyl. will that work? how long do i soak? do i have to rinse it? or will the alc. just evaporate? please advise. the atty still works, just not as well, doesnt taste as good, only a couple weeks old, looks dirty inside. thanks for your help!