Some juices will burn the wicks more than others, while the coils, after a dry burn, are still good. I see the wicks where they are near the coils get really burnt frail at times depending on the juice, usually a really sweet juice. I tried to take the wick out of one and replace it with a spare one I had that was still good, but I couldn't find a way to fit the wicks back into the coils. Anyone have any tips or advice on how they do this?